Home / 390,145.18-538,422.24-229,046.98

Finding the Fourth Proportional to 390,145.18, 538,422.24 and 229,046.98

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Solution

The fourth proportional to 390,145.18, 538,422.24 and 229,046.98 is: 316,097.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,145.18 : 538,422.24 = 229,046.98 : x
  2. Step 2: Convert to fraction form
    390,145.18/538,422.24 = 229,046.98/x
  3. Step 3: Cross multiply
    390,145.18x = 538,422.24 × 229,046.98
  4. Step 4: Simplify right side
    390,145.18x = 123,323,988,036.84
  5. Step 5: Solve for x
    x = 123,323,988,036.84/390,145.18
  6. Step 6: Final answer
    x = 316,097.68

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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.