Home / 387,368.47-581,086.19-106,885.72

Finding the Fourth Proportional to 387,368.47, 581,086.19 and 106,885.72

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Solution

The fourth proportional to 387,368.47, 581,086.19 and 106,885.72 is: 160,337.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,368.47 : 581,086.19 = 106,885.72 : x
  2. Step 2: Convert to fraction form
    387,368.47/581,086.19 = 106,885.72/x
  3. Step 3: Cross multiply
    387,368.47x = 581,086.19 × 106,885.72
  4. Step 4: Simplify right side
    387,368.47x = 62,109,815,800.21
  5. Step 5: Solve for x
    x = 62,109,815,800.21/387,368.47
  6. Step 6: Final answer
    x = 160,337.82

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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.