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Finding the Fourth Proportional to 371,808.80, 557,098.80 and 316,512.80

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Solution

The fourth proportional to 371,808.80, 557,098.80 and 316,512.80 is: 474,246.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,808.80 : 557,098.80 = 316,512.80 : x
  2. Step 2: Convert to fraction form
    371,808.80/557,098.80 = 316,512.80/x
  3. Step 3: Cross multiply
    371,808.80x = 557,098.80 × 316,512.80
  4. Step 4: Simplify right side
    371,808.80x = 176,328,901,064.64
  5. Step 5: Solve for x
    x = 176,328,901,064.64/371,808.80
  6. Step 6: Final answer
    x = 474,246.17

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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.