Home / 420,566.54-630,787.52-136,281.92

Finding the Fourth Proportional to 420,566.54, 630,787.52 and 136,281.92

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Solution

The fourth proportional to 420,566.54, 630,787.52 and 136,281.92 is: 204,402.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,566.54 : 630,787.52 = 136,281.92 : x
  2. Step 2: Convert to fraction form
    420,566.54/630,787.52 = 136,281.92/x
  3. Step 3: Cross multiply
    420,566.54x = 630,787.52 × 136,281.92
  4. Step 4: Simplify right side
    420,566.54x = 85,964,931,524.41
  5. Step 5: Solve for x
    x = 85,964,931,524.41/420,566.54
  6. Step 6: Final answer
    x = 204,402.69

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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.