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Finding the Fourth Proportional to 265,136.80, 397,767.46 and 87,643.80

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Solution

The fourth proportional to 265,136.80, 397,767.46 and 87,643.80 is: 131,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,136.80 : 397,767.46 = 87,643.80 : x
  2. Step 2: Convert to fraction form
    265,136.80/397,767.46 = 87,643.80/x
  3. Step 3: Cross multiply
    265,136.80x = 397,767.46 × 87,643.80
  4. Step 4: Simplify right side
    265,136.80x = 34,861,849,721.91
  5. Step 5: Solve for x
    x = 34,861,849,721.91/265,136.80
  6. Step 6: Final answer
    x = 131,486.28

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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.