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Finding the Fourth Proportional to 424,155.32, 636,128.04 and 253,423.64

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Solution

The fourth proportional to 424,155.32, 636,128.04 and 253,423.64 is: 380,072.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,155.32 : 636,128.04 = 253,423.64 : x
  2. Step 2: Convert to fraction form
    424,155.32/636,128.04 = 253,423.64/x
  3. Step 3: Cross multiply
    424,155.32x = 636,128.04 × 253,423.64
  4. Step 4: Simplify right side
    424,155.32x = 161,209,883,402.87
  5. Step 5: Solve for x
    x = 161,209,883,402.87/424,155.32
  6. Step 6: Final answer
    x = 380,072.76

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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.