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Finding the Fourth Proportional to 387,068.88, 534,136.77 and 214,997.92

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Solution

The fourth proportional to 387,068.88, 534,136.77 and 214,997.92 is: 296,686.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,068.88 : 534,136.77 = 214,997.92 : x
  2. Step 2: Convert to fraction form
    387,068.88/534,136.77 = 214,997.92/x
  3. Step 3: Cross multiply
    387,068.88x = 534,136.77 × 214,997.92
  4. Step 4: Simplify right side
    387,068.88x = 114,838,294,545.52
  5. Step 5: Solve for x
    x = 114,838,294,545.52/387,068.88
  6. Step 6: Final answer
    x = 296,686.97

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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.