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Finding the Fourth Proportional to 288,519.60, 432,779.40 and 75,287.10

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Solution

The fourth proportional to 288,519.60, 432,779.40 and 75,287.10 is: 112,930.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,519.60 : 432,779.40 = 75,287.10 : x
  2. Step 2: Convert to fraction form
    288,519.60/432,779.40 = 75,287.10/x
  3. Step 3: Cross multiply
    288,519.60x = 432,779.40 × 75,287.10
  4. Step 4: Simplify right side
    288,519.60x = 32,582,705,965.74
  5. Step 5: Solve for x
    x = 32,582,705,965.74/288,519.60
  6. Step 6: Final answer
    x = 112,930.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.