Home / 457,747.20-686,685.60-142,171.20

Finding the Fourth Proportional to 457,747.20, 686,685.60 and 142,171.20

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Solution

The fourth proportional to 457,747.20, 686,685.60 and 142,171.20 is: 213,276.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,747.20 : 686,685.60 = 142,171.20 : x
  2. Step 2: Convert to fraction form
    457,747.20/686,685.60 = 142,171.20/x
  3. Step 3: Cross multiply
    457,747.20x = 686,685.60 × 142,171.20
  4. Step 4: Simplify right side
    457,747.20x = 97,626,915,774.72
  5. Step 5: Solve for x
    x = 97,626,915,774.72/457,747.20
  6. Step 6: Final answer
    x = 213,276.93

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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.