Home / 420,267.86-579,966.86-238,979.81

Finding the Fourth Proportional to 420,267.86, 579,966.86 and 238,979.81

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Solution

The fourth proportional to 420,267.86, 579,966.86 and 238,979.81 is: 329,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,267.86 : 579,966.86 = 238,979.81 : x
  2. Step 2: Convert to fraction form
    420,267.86/579,966.86 = 238,979.81/x
  3. Step 3: Cross multiply
    420,267.86x = 579,966.86 × 238,979.81
  4. Step 4: Simplify right side
    420,267.86x = 138,600,367,706.71
  5. Step 5: Solve for x
    x = 138,600,367,706.71/420,267.86
  6. Step 6: Final answer
    x = 329,790.55

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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.