Home / 393,073.28-542,442.92-223,316.72

Finding the Fourth Proportional to 393,073.28, 542,442.92 and 223,316.72

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Solution

The fourth proportional to 393,073.28, 542,442.92 and 223,316.72 is: 308,178.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,073.28 : 542,442.92 = 223,316.72 : x
  2. Step 2: Convert to fraction form
    393,073.28/542,442.92 = 223,316.72/x
  3. Step 3: Cross multiply
    393,073.28x = 542,442.92 × 223,316.72
  4. Step 4: Simplify right side
    393,073.28x = 121,136,573,681.62
  5. Step 5: Solve for x
    x = 121,136,573,681.62/393,073.28
  6. Step 6: Final answer
    x = 308,178.09

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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.