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Finding the Fourth Proportional to 579,346.40, 869,019.60 and 152,881.40

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Solution

The fourth proportional to 579,346.40, 869,019.60 and 152,881.40 is: 229,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,346.40 : 869,019.60 = 152,881.40 : x
  2. Step 2: Convert to fraction form
    579,346.40/869,019.60 = 152,881.40/x
  3. Step 3: Cross multiply
    579,346.40x = 869,019.60 × 152,881.40
  4. Step 4: Simplify right side
    579,346.40x = 132,856,933,075.44
  5. Step 5: Solve for x
    x = 132,856,933,075.44/579,346.40
  6. Step 6: Final answer
    x = 229,322.10

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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.