Home / 420,139.47-579,799.38-229,152.86

Finding the Fourth Proportional to 420,139.47, 579,799.38 and 229,152.86

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Solution

The fourth proportional to 420,139.47, 579,799.38 and 229,152.86 is: 316,234.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,139.47 : 579,799.38 = 229,152.86 : x
  2. Step 2: Convert to fraction form
    420,139.47/579,799.38 = 229,152.86/x
  3. Step 3: Cross multiply
    420,139.47x = 579,799.38 × 229,152.86
  4. Step 4: Simplify right side
    420,139.47x = 132,862,686,153.23
  5. Step 5: Solve for x
    x = 132,862,686,153.23/420,139.47
  6. Step 6: Final answer
    x = 316,234.72

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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.