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Finding the Fourth Proportional to 363,515.13, 501,478.56 and 256,144.23

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Solution

The fourth proportional to 363,515.13, 501,478.56 and 256,144.23 is: 353,357.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,515.13 : 501,478.56 = 256,144.23 : x
  2. Step 2: Convert to fraction form
    363,515.13/501,478.56 = 256,144.23/x
  3. Step 3: Cross multiply
    363,515.13x = 501,478.56 × 256,144.23
  4. Step 4: Simplify right side
    363,515.13x = 128,450,839,612.71
  5. Step 5: Solve for x
    x = 128,450,839,612.71/363,515.13
  6. Step 6: Final answer
    x = 353,357.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.