Home / 390,426.24-538,727.85-229,266.21

Finding the Fourth Proportional to 390,426.24, 538,727.85 and 229,266.21

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Solution

The fourth proportional to 390,426.24, 538,727.85 and 229,266.21 is: 316,351.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,426.24 : 538,727.85 = 229,266.21 : x
  2. Step 2: Convert to fraction form
    390,426.24/538,727.85 = 229,266.21/x
  3. Step 3: Cross multiply
    390,426.24x = 538,727.85 × 229,266.21
  4. Step 4: Simplify right side
    390,426.24x = 123,512,092,390.95
  5. Step 5: Solve for x
    x = 123,512,092,390.95/390,426.24
  6. Step 6: Final answer
    x = 316,351.92

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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.