Home / 420,566.79-630,787.90-136,282.17

Finding the Fourth Proportional to 420,566.79, 630,787.90 and 136,282.17

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Solution

The fourth proportional to 420,566.79, 630,787.90 and 136,282.17 is: 204,403.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,566.79 : 630,787.90 = 136,282.17 : x
  2. Step 2: Convert to fraction form
    420,566.79/630,787.90 = 136,282.17/x
  3. Step 3: Cross multiply
    420,566.79x = 630,787.90 × 136,282.17
  4. Step 4: Simplify right side
    420,566.79x = 85,965,143,821.74
  5. Step 5: Solve for x
    x = 85,965,143,821.74/420,566.79
  6. Step 6: Final answer
    x = 204,403.07

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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.