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Finding the Fourth Proportional to 286,042.40, 429,063.60 and 75,701.60

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Solution

The fourth proportional to 286,042.40, 429,063.60 and 75,701.60 is: 113,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,042.40 : 429,063.60 = 75,701.60 : x
  2. Step 2: Convert to fraction form
    286,042.40/429,063.60 = 75,701.60/x
  3. Step 3: Cross multiply
    286,042.40x = 429,063.60 × 75,701.60
  4. Step 4: Simplify right side
    286,042.40x = 32,480,801,021.76
  5. Step 5: Solve for x
    x = 32,480,801,021.76/286,042.40
  6. Step 6: Final answer
    x = 113,552.40

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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.