Home / 403,000.62-556,140.85-221,708.66

Finding the Fourth Proportional to 403,000.62, 556,140.85 and 221,708.66

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Solution

The fourth proportional to 403,000.62, 556,140.85 and 221,708.66 is: 305,957.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,000.62 : 556,140.85 = 221,708.66 : x
  2. Step 2: Convert to fraction form
    403,000.62/556,140.85 = 221,708.66/x
  3. Step 3: Cross multiply
    403,000.62x = 556,140.85 × 221,708.66
  4. Step 4: Simplify right side
    403,000.62x = 123,301,242,624.76
  5. Step 5: Solve for x
    x = 123,301,242,624.76/403,000.62
  6. Step 6: Final answer
    x = 305,957.95

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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.