Home / 221,154,425.28-305,199,593.10-120,689,349.30

Finding the Fourth Proportional to 221,154,425.28, 305,199,593.10 and 120,689,349.30

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Solution

The fourth proportional to 221,154,425.28, 305,199,593.10 and 120,689,349.30 is: 166,554,841.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,154,425.28 : 305,199,593.10 = 120,689,349.30 : x
  2. Step 2: Convert to fraction form
    221,154,425.28/305,199,593.10 = 120,689,349.30/x
  3. Step 3: Cross multiply
    221,154,425.28x = 305,199,593.10 × 120,689,349.30
  4. Step 4: Simplify right side
    221,154,425.28x = 36,834,340,297,863,768
  5. Step 5: Solve for x
    x = 36,834,340,297,863,768/221,154,425.28
  6. Step 6: Final answer
    x = 166,554,841.72

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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.