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Finding the Fourth Proportional to 316,114.20, 473,940.90 and 129,029.40

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Solution

The fourth proportional to 316,114.20, 473,940.90 and 129,029.40 is: 193,450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,114.20 : 473,940.90 = 129,029.40 : x
  2. Step 2: Convert to fraction form
    316,114.20/473,940.90 = 129,029.40/x
  3. Step 3: Cross multiply
    316,114.20x = 473,940.90 × 129,029.40
  4. Step 4: Simplify right side
    316,114.20x = 61,152,309,962.46
  5. Step 5: Solve for x
    x = 61,152,309,962.46/316,114.20
  6. Step 6: Final answer
    x = 193,450.06

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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.