Home / 420,298.83-579,988.62-239,054.85

Finding the Fourth Proportional to 420,298.83, 579,988.62 and 239,054.85

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Solution

The fourth proportional to 420,298.83, 579,988.62 and 239,054.85 is: 329,882.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,298.83 : 579,988.62 = 239,054.85 : x
  2. Step 2: Convert to fraction form
    420,298.83/579,988.62 = 239,054.85/x
  3. Step 3: Cross multiply
    420,298.83x = 579,988.62 × 239,054.85
  4. Step 4: Simplify right side
    420,298.83x = 138,649,092,555.81
  5. Step 5: Solve for x
    x = 138,649,092,555.81/420,298.83
  6. Step 6: Final answer
    x = 329,882.18

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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.