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Finding the Fourth Proportional to 457,167.80, 685,751.70 and 141,622.20

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Solution

The fourth proportional to 457,167.80, 685,751.70 and 141,622.20 is: 212,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,167.80 : 685,751.70 = 141,622.20 : x
  2. Step 2: Convert to fraction form
    457,167.80/685,751.70 = 141,622.20/x
  3. Step 3: Cross multiply
    457,167.80x = 685,751.70 × 141,622.20
  4. Step 4: Simplify right side
    457,167.80x = 97,117,664,407.74
  5. Step 5: Solve for x
    x = 97,117,664,407.74/457,167.80
  6. Step 6: Final answer
    x = 212,433.30

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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.