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Finding the Fourth Proportional to 267,136.72, 400,612.81 and 77,545.69

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Solution

The fourth proportional to 267,136.72, 400,612.81 and 77,545.69 is: 116,291.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,136.72 : 400,612.81 = 77,545.69 : x
  2. Step 2: Convert to fraction form
    267,136.72/400,612.81 = 77,545.69/x
  3. Step 3: Cross multiply
    267,136.72x = 400,612.81 × 77,545.69
  4. Step 4: Simplify right side
    267,136.72x = 31,065,796,774.29
  5. Step 5: Solve for x
    x = 31,065,796,774.29/267,136.72
  6. Step 6: Final answer
    x = 116,291.75

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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.