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Finding the Fourth Proportional to 316,341.43, 474,512.15 and 138,849.98

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Solution

The fourth proportional to 316,341.43, 474,512.15 and 138,849.98 is: 208,274.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,341.43 : 474,512.15 = 138,849.98 : x
  2. Step 2: Convert to fraction form
    316,341.43/474,512.15 = 138,849.98/x
  3. Step 3: Cross multiply
    316,341.43x = 474,512.15 × 138,849.98
  4. Step 4: Simplify right side
    316,341.43x = 65,885,999,470.45
  5. Step 5: Solve for x
    x = 65,885,999,470.45/316,341.43
  6. Step 6: Final answer
    x = 208,274.96

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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.