Home / 431,423.04-647,136-131,902.44

Finding the Fourth Proportional to 431,423.04, 647,136 and 131,902.44

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Solution

The fourth proportional to 431,423.04, 647,136 and 131,902.44 is: 197,854.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,423.04 : 647,136 = 131,902.44 : x
  2. Step 2: Convert to fraction form
    431,423.04/647,136 = 131,902.44/x
  3. Step 3: Cross multiply
    431,423.04x = 647,136 × 131,902.44
  4. Step 4: Simplify right side
    431,423.04x = 85,358,817,411.84
  5. Step 5: Solve for x
    x = 85,358,817,411.84/431,423.04
  6. Step 6: Final answer
    x = 197,854.10

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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.