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Finding the Fourth Proportional to 302,740.80, 453,916.80 and 125,318.40

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Solution

The fourth proportional to 302,740.80, 453,916.80 and 125,318.40 is: 187,897.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,740.80 : 453,916.80 = 125,318.40 : x
  2. Step 2: Convert to fraction form
    302,740.80/453,916.80 = 125,318.40/x
  3. Step 3: Cross multiply
    302,740.80x = 453,916.80 × 125,318.40
  4. Step 4: Simplify right side
    302,740.80x = 56,884,127,109.12
  5. Step 5: Solve for x
    x = 56,884,127,109.12/302,740.80
  6. Step 6: Final answer
    x = 187,897.13

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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.