Home / 393,005.28-542,356.08-231,899.52

Finding the Fourth Proportional to 393,005.28, 542,356.08 and 231,899.52

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Solution

The fourth proportional to 393,005.28, 542,356.08 and 231,899.52 is: 320,026.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,005.28 : 542,356.08 = 231,899.52 : x
  2. Step 2: Convert to fraction form
    393,005.28/542,356.08 = 231,899.52/x
  3. Step 3: Cross multiply
    393,005.28x = 542,356.08 × 231,899.52
  4. Step 4: Simplify right side
    393,005.28x = 125,772,114,621.08
  5. Step 5: Solve for x
    x = 125,772,114,621.08/393,005.28
  6. Step 6: Final answer
    x = 320,026.53

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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.