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Finding the Fourth Proportional to 457,455.40, 686,183.10 and 125,031.40

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Solution

The fourth proportional to 457,455.40, 686,183.10 and 125,031.40 is: 187,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,455.40 : 686,183.10 = 125,031.40 : x
  2. Step 2: Convert to fraction form
    457,455.40/686,183.10 = 125,031.40/x
  3. Step 3: Cross multiply
    457,455.40x = 686,183.10 × 125,031.40
  4. Step 4: Simplify right side
    457,455.40x = 85,794,433,649.34
  5. Step 5: Solve for x
    x = 85,794,433,649.34/457,455.40
  6. Step 6: Final answer
    x = 187,547.10

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Similar ratio
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1.5x scale

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.