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Finding the Fourth Proportional to 308,404.40, 462,779.40 and 130,881.20

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Solution

The fourth proportional to 308,404.40, 462,779.40 and 130,881.20 is: 196,395.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,404.40 : 462,779.40 = 130,881.20 : x
  2. Step 2: Convert to fraction form
    308,404.40/462,779.40 = 130,881.20/x
  3. Step 3: Cross multiply
    308,404.40x = 462,779.40 × 130,881.20
  4. Step 4: Simplify right side
    308,404.40x = 60,569,123,207.28
  5. Step 5: Solve for x
    x = 60,569,123,207.28/308,404.40
  6. Step 6: Final answer
    x = 196,395.13

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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.