Home / 393,288.38-542,779.59-240,416.04

Finding the Fourth Proportional to 393,288.38, 542,779.59 and 240,416.04

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Solution

The fourth proportional to 393,288.38, 542,779.59 and 240,416.04 is: 331,799.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,288.38 : 542,779.59 = 240,416.04 : x
  2. Step 2: Convert to fraction form
    393,288.38/542,779.59 = 240,416.04/x
  3. Step 3: Cross multiply
    393,288.38x = 542,779.59 × 240,416.04
  4. Step 4: Simplify right side
    393,288.38x = 130,492,919,620.62
  5. Step 5: Solve for x
    x = 130,492,919,620.62/393,288.38
  6. Step 6: Final answer
    x = 331,799.58

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1.5x scale

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.