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Finding the Fourth Proportional to 286,620.42, 429,930.60 and 89,628.42

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Solution

The fourth proportional to 286,620.42, 429,930.60 and 89,628.42 is: 134,442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,620.42 : 429,930.60 = 89,628.42 : x
  2. Step 2: Convert to fraction form
    286,620.42/429,930.60 = 89,628.42/x
  3. Step 3: Cross multiply
    286,620.42x = 429,930.60 × 89,628.42
  4. Step 4: Simplify right side
    286,620.42x = 38,534,000,387.65
  5. Step 5: Solve for x
    x = 38,534,000,387.65/286,620.42
  6. Step 6: Final answer
    x = 134,442.62

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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.