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Finding the Fourth Proportional to 387,554.71, 534,971.65 and 226,462.12

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Solution

The fourth proportional to 387,554.71, 534,971.65 and 226,462.12 is: 312,603.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,554.71 : 534,971.65 = 226,462.12 : x
  2. Step 2: Convert to fraction form
    387,554.71/534,971.65 = 226,462.12/x
  3. Step 3: Cross multiply
    387,554.71x = 534,971.65 × 226,462.12
  4. Step 4: Simplify right side
    387,554.71x = 121,150,813,998.90
  5. Step 5: Solve for x
    x = 121,150,813,998.90/387,554.71
  6. Step 6: Final answer
    x = 312,603.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.