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Finding the Fourth Proportional to 286,293,350.40, 429,565,996.80 and 132,860,428.80

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Solution

The fourth proportional to 286,293,350.40, 429,565,996.80 and 132,860,428.80 is: 199,349,102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,293,350.40 : 429,565,996.80 = 132,860,428.80 : x
  2. Step 2: Convert to fraction form
    286,293,350.40/429,565,996.80 = 132,860,428.80/x
  3. Step 3: Cross multiply
    286,293,350.40x = 429,565,996.80 × 132,860,428.80
  4. Step 4: Simplify right side
    286,293,350.40x = 57,072,322,532,747,432
  5. Step 5: Solve for x
    x = 57,072,322,532,747,432/286,293,350.40
  6. Step 6: Final answer
    x = 199,349,102.78

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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.