Home / 438,760.20-657,702.90-201,689.40

Finding the Fourth Proportional to 438,760.20, 657,702.90 and 201,689.40

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Solution

The fourth proportional to 438,760.20, 657,702.90 and 201,689.40 is: 302,333.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,760.20 : 657,702.90 = 201,689.40 : x
  2. Step 2: Convert to fraction form
    438,760.20/657,702.90 = 201,689.40/x
  3. Step 3: Cross multiply
    438,760.20x = 657,702.90 × 201,689.40
  4. Step 4: Simplify right side
    438,760.20x = 132,651,703,279.26
  5. Step 5: Solve for x
    x = 132,651,703,279.26/438,760.20
  6. Step 6: Final answer
    x = 302,333.04

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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.