Home / 402,742.85-555,787.14-221,466.47

Finding the Fourth Proportional to 402,742.85, 555,787.14 and 221,466.47

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Solution

The fourth proportional to 402,742.85, 555,787.14 and 221,466.47 is: 305,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,742.85 : 555,787.14 = 221,466.47 : x
  2. Step 2: Convert to fraction form
    402,742.85/555,787.14 = 221,466.47/x
  3. Step 3: Cross multiply
    402,742.85x = 555,787.14 × 221,466.47
  4. Step 4: Simplify right side
    402,742.85x = 123,088,215,967.20
  5. Step 5: Solve for x
    x = 123,088,215,967.20/402,742.85
  6. Step 6: Final answer
    x = 305,624.83

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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.