Home / 400,926.18-553,278.09-239,781.21

Finding the Fourth Proportional to 400,926.18, 553,278.09 and 239,781.21

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Solution

The fourth proportional to 400,926.18, 553,278.09 and 239,781.21 is: 330,898.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,926.18 : 553,278.09 = 239,781.21 : x
  2. Step 2: Convert to fraction form
    400,926.18/553,278.09 = 239,781.21/x
  3. Step 3: Cross multiply
    400,926.18x = 553,278.09 × 239,781.21
  4. Step 4: Simplify right side
    400,926.18x = 132,665,689,886.69
  5. Step 5: Solve for x
    x = 132,665,689,886.69/400,926.18
  6. Step 6: Final answer
    x = 330,898.05

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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.