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Finding the Fourth Proportional to 387,552.72, 581,291.49 and 117,683.20

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Solution

The fourth proportional to 387,552.72, 581,291.49 and 117,683.20 is: 176,513.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,552.72 : 581,291.49 = 117,683.20 : x
  2. Step 2: Convert to fraction form
    387,552.72/581,291.49 = 117,683.20/x
  3. Step 3: Cross multiply
    387,552.72x = 581,291.49 × 117,683.20
  4. Step 4: Simplify right side
    387,552.72x = 68,408,240,032.52
  5. Step 5: Solve for x
    x = 68,408,240,032.52/387,552.72
  6. Step 6: Final answer
    x = 176,513.38

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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.