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Finding the Fourth Proportional to 563,121.16, 777,107.16 and 308,472.28

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Solution

The fourth proportional to 563,121.16, 777,107.16 and 308,472.28 is: 425,691.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,121.16 : 777,107.16 = 308,472.28 : x
  2. Step 2: Convert to fraction form
    563,121.16/777,107.16 = 308,472.28/x
  3. Step 3: Cross multiply
    563,121.16x = 777,107.16 × 308,472.28
  4. Step 4: Simplify right side
    563,121.16x = 239,716,017,449.53
  5. Step 5: Solve for x
    x = 239,716,017,449.53/563,121.16
  6. Step 6: Final answer
    x = 425,691.72

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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.