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Finding the Fourth Proportional to 286,528.75, 429,793.13 and 89,536.75

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Solution

The fourth proportional to 286,528.75, 429,793.13 and 89,536.75 is: 134,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,528.75 : 429,793.13 = 89,536.75 : x
  2. Step 2: Convert to fraction form
    286,528.75/429,793.13 = 89,536.75/x
  3. Step 3: Cross multiply
    286,528.75x = 429,793.13 × 89,536.75
  4. Step 4: Simplify right side
    286,528.75x = 38,482,280,032.53
  5. Step 5: Solve for x
    x = 38,482,280,032.53/286,528.75
  6. Step 6: Final answer
    x = 134,305.13

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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.