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Finding the Fourth Proportional to 579,140.40, 868,019.40 and 242,180.40

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Solution

The fourth proportional to 579,140.40, 868,019.40 and 242,180.40 is: 362,981.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,140.40 : 868,019.40 = 242,180.40 : x
  2. Step 2: Convert to fraction form
    579,140.40/868,019.40 = 242,180.40/x
  3. Step 3: Cross multiply
    579,140.40x = 868,019.40 × 242,180.40
  4. Step 4: Simplify right side
    579,140.40x = 210,217,285,499.76
  5. Step 5: Solve for x
    x = 210,217,285,499.76/579,140.40
  6. Step 6: Final answer
    x = 362,981.56

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.