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Finding the Fourth Proportional to 457,117.16, 686,118 and 220,626.32

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Solution

The fourth proportional to 457,117.16, 686,118 and 220,626.32 is: 331,152.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,117.16 : 686,118 = 220,626.32 : x
  2. Step 2: Convert to fraction form
    457,117.16/686,118 = 220,626.32/x
  3. Step 3: Cross multiply
    457,117.16x = 686,118 × 220,626.32
  4. Step 4: Simplify right side
    457,117.16x = 151,375,689,425.76
  5. Step 5: Solve for x
    x = 151,375,689,425.76/457,117.16
  6. Step 6: Final answer
    x = 331,152.94

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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.