Home / 390,619.04-538,875.52-229,471.16

Finding the Fourth Proportional to 390,619.04, 538,875.52 and 229,471.16

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Solution

The fourth proportional to 390,619.04, 538,875.52 and 229,471.16 is: 316,565.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,619.04 : 538,875.52 = 229,471.16 : x
  2. Step 2: Convert to fraction form
    390,619.04/538,875.52 = 229,471.16/x
  3. Step 3: Cross multiply
    390,619.04x = 538,875.52 × 229,471.16
  4. Step 4: Simplify right side
    390,619.04x = 123,656,387,401.95
  5. Step 5: Solve for x
    x = 123,656,387,401.95/390,619.04
  6. Step 6: Final answer
    x = 316,565.19

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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.