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Finding the Fourth Proportional to 285,501.59, 428,219.26 and 75,155.93

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Solution

The fourth proportional to 285,501.59, 428,219.26 and 75,155.93 is: 112,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,501.59 : 428,219.26 = 75,155.93 : x
  2. Step 2: Convert to fraction form
    285,501.59/428,219.26 = 75,155.93/x
  3. Step 3: Cross multiply
    285,501.59x = 428,219.26 × 75,155.93
  4. Step 4: Simplify right side
    285,501.59x = 32,183,216,729.21
  5. Step 5: Solve for x
    x = 32,183,216,729.21/285,501.59
  6. Step 6: Final answer
    x = 112,725.18

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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.