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Finding the Fourth Proportional to 387,668.82, 581,123.58 and 216,973.90

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Solution

The fourth proportional to 387,668.82, 581,123.58 and 216,973.90 is: 325,248.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,668.82 : 581,123.58 = 216,973.90 : x
  2. Step 2: Convert to fraction form
    387,668.82/581,123.58 = 216,973.90/x
  3. Step 3: Cross multiply
    387,668.82x = 581,123.58 × 216,973.90
  4. Step 4: Simplify right side
    387,668.82x = 126,088,649,534.56
  5. Step 5: Solve for x
    x = 126,088,649,534.56/387,668.82
  6. Step 6: Final answer
    x = 325,248.36

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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.