Home / 420,140.31-579,800.54-229,153.70

Finding the Fourth Proportional to 420,140.31, 579,800.54 and 229,153.70

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Solution

The fourth proportional to 420,140.31, 579,800.54 and 229,153.70 is: 316,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,140.31 : 579,800.54 = 229,153.70 : x
  2. Step 2: Convert to fraction form
    420,140.31/579,800.54 = 229,153.70/x
  3. Step 3: Cross multiply
    420,140.31x = 579,800.54 × 229,153.70
  4. Step 4: Simplify right side
    420,140.31x = 132,863,439,003.00
  5. Step 5: Solve for x
    x = 132,863,439,003.00/420,140.31
  6. Step 6: Final answer
    x = 316,235.88

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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.