Home / 520,943.84-781,260.24-221,423.12

Finding the Fourth Proportional to 520,943.84, 781,260.24 and 221,423.12

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Solution

The fourth proportional to 520,943.84, 781,260.24 and 221,423.12 is: 332,068.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,943.84 : 781,260.24 = 221,423.12 : x
  2. Step 2: Convert to fraction form
    520,943.84/781,260.24 = 221,423.12/x
  3. Step 3: Cross multiply
    520,943.84x = 781,260.24 × 221,423.12
  4. Step 4: Simplify right side
    520,943.84x = 172,989,079,872.75
  5. Step 5: Solve for x
    x = 172,989,079,872.75/520,943.84
  6. Step 6: Final answer
    x = 332,068.58

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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.