Home / 477,611.20-715,455.13-221,082.18

Finding the Fourth Proportional to 477,611.20, 715,455.13 and 221,082.18

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Solution

The fourth proportional to 477,611.20, 715,455.13 and 221,082.18 is: 331,178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,611.20 : 715,455.13 = 221,082.18 : x
  2. Step 2: Convert to fraction form
    477,611.20/715,455.13 = 221,082.18/x
  3. Step 3: Cross multiply
    477,611.20x = 715,455.13 × 221,082.18
  4. Step 4: Simplify right side
    477,611.20x = 158,174,379,832.58
  5. Step 5: Solve for x
    x = 158,174,379,832.58/477,611.20
  6. Step 6: Final answer
    x = 331,178.12

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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.