Home / 390,731.08-539,314.02-229,694.04

Finding the Fourth Proportional to 390,731.08, 539,314.02 and 229,694.04

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Solution

The fourth proportional to 390,731.08, 539,314.02 and 229,694.04 is: 317,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,731.08 : 539,314.02 = 229,694.04 : x
  2. Step 2: Convert to fraction form
    390,731.08/539,314.02 = 229,694.04/x
  3. Step 3: Cross multiply
    390,731.08x = 539,314.02 × 229,694.04
  4. Step 4: Simplify right side
    390,731.08x = 123,877,216,082.44
  5. Step 5: Solve for x
    x = 123,877,216,082.44/390,731.08
  6. Step 6: Final answer
    x = 317,039.58

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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.