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Finding the Fourth Proportional to 387,291.77, 581,036.21 and 227,502.81

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Solution

The fourth proportional to 387,291.77, 581,036.21 and 227,502.81 is: 341,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,291.77 : 581,036.21 = 227,502.81 : x
  2. Step 2: Convert to fraction form
    387,291.77/581,036.21 = 227,502.81/x
  3. Step 3: Cross multiply
    387,291.77x = 581,036.21 × 227,502.81
  4. Step 4: Simplify right side
    387,291.77x = 132,187,369,349.24
  5. Step 5: Solve for x
    x = 132,187,369,349.24/387,291.77
  6. Step 6: Final answer
    x = 341,312.11

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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.