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Finding the Fourth Proportional to 286,272,017.80, 429,408,026.70 and 70,861,265.80

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Solution

The fourth proportional to 286,272,017.80, 429,408,026.70 and 70,861,265.80 is: 106,291,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,272,017.80 : 429,408,026.70 = 70,861,265.80 : x
  2. Step 2: Convert to fraction form
    286,272,017.80/429,408,026.70 = 70,861,265.80/x
  3. Step 3: Cross multiply
    286,272,017.80x = 429,408,026.70 × 70,861,265.80
  4. Step 4: Simplify right side
    286,272,017.80x = 30,428,396,316,642,196
  5. Step 5: Solve for x
    x = 30,428,396,316,642,196/286,272,017.80
  6. Step 6: Final answer
    x = 106,291,898.70

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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.