Home / 420,360.30-580,111.20-229,384.17

Finding the Fourth Proportional to 420,360.30, 580,111.20 and 229,384.17

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Solution

The fourth proportional to 420,360.30, 580,111.20 and 229,384.17 is: 316,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,360.30 : 580,111.20 = 229,384.17 : x
  2. Step 2: Convert to fraction form
    420,360.30/580,111.20 = 229,384.17/x
  3. Step 3: Cross multiply
    420,360.30x = 580,111.20 × 229,384.17
  4. Step 4: Simplify right side
    420,360.30x = 133,068,326,119.70
  5. Step 5: Solve for x
    x = 133,068,326,119.70/420,360.30
  6. Step 6: Final answer
    x = 316,557.79

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1.5x scale

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.