Home / 390,144.18-538,420.86-229,045.98

Finding the Fourth Proportional to 390,144.18, 538,420.86 and 229,045.98

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Solution

The fourth proportional to 390,144.18, 538,420.86 and 229,045.98 is: 316,096.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,144.18 : 538,420.86 = 229,045.98 : x
  2. Step 2: Convert to fraction form
    390,144.18/538,420.86 = 229,045.98/x
  3. Step 3: Cross multiply
    390,144.18x = 538,420.86 × 229,045.98
  4. Step 4: Simplify right side
    390,144.18x = 123,323,133,531.14
  5. Step 5: Solve for x
    x = 123,323,133,531.14/390,144.18
  6. Step 6: Final answer
    x = 316,096.30

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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.