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Finding the Fourth Proportional to 609,140.40, 913,710.60 and 165,908.40

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Solution

The fourth proportional to 609,140.40, 913,710.60 and 165,908.40 is: 248,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,140.40 : 913,710.60 = 165,908.40 : x
  2. Step 2: Convert to fraction form
    609,140.40/913,710.60 = 165,908.40/x
  3. Step 3: Cross multiply
    609,140.40x = 913,710.60 × 165,908.40
  4. Step 4: Simplify right side
    609,140.40x = 151,592,263,709.04
  5. Step 5: Solve for x
    x = 151,592,263,709.04/609,140.40
  6. Step 6: Final answer
    x = 248,862.60

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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.