Home / 420,364.02-580,116.35-229,387.89

Finding the Fourth Proportional to 420,364.02, 580,116.35 and 229,387.89

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Solution

The fourth proportional to 420,364.02, 580,116.35 and 229,387.89 is: 316,562.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,364.02 : 580,116.35 = 229,387.89 : x
  2. Step 2: Convert to fraction form
    420,364.02/580,116.35 = 229,387.89/x
  3. Step 3: Cross multiply
    420,364.02x = 580,116.35 × 229,387.89
  4. Step 4: Simplify right side
    420,364.02x = 133,071,665,481.00
  5. Step 5: Solve for x
    x = 133,071,665,481.00/420,364.02
  6. Step 6: Final answer
    x = 316,562.93

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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.