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Finding the Fourth Proportional to 387,605.16, 581,412.24 and 103,294.08

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Solution

The fourth proportional to 387,605.16, 581,412.24 and 103,294.08 is: 154,942.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,605.16 : 581,412.24 = 103,294.08 : x
  2. Step 2: Convert to fraction form
    387,605.16/581,412.24 = 103,294.08/x
  3. Step 3: Cross multiply
    387,605.16x = 581,412.24 × 103,294.08
  4. Step 4: Simplify right side
    387,605.16x = 60,056,442,431.54
  5. Step 5: Solve for x
    x = 60,056,442,431.54/387,605.16
  6. Step 6: Final answer
    x = 154,942.32

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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.