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Finding the Fourth Proportional to 402,654.15, 603,979.65 and 103,134.33

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Solution

The fourth proportional to 402,654.15, 603,979.65 and 103,134.33 is: 154,701.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,654.15 : 603,979.65 = 103,134.33 : x
  2. Step 2: Convert to fraction form
    402,654.15/603,979.65 = 103,134.33/x
  3. Step 3: Cross multiply
    402,654.15x = 603,979.65 × 103,134.33
  4. Step 4: Simplify right side
    402,654.15x = 62,291,036,536.38
  5. Step 5: Solve for x
    x = 62,291,036,536.38/402,654.15
  6. Step 6: Final answer
    x = 154,701.09

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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.