Home / 214,326,139.40-321,489,209.10-77,993,808.20

Finding the Fourth Proportional to 214,326,139.40, 321,489,209.10 and 77,993,808.20

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Solution

The fourth proportional to 214,326,139.40, 321,489,209.10 and 77,993,808.20 is: 116,990,712.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,326,139.40 : 321,489,209.10 = 77,993,808.20 : x
  2. Step 2: Convert to fraction form
    214,326,139.40/321,489,209.10 = 77,993,808.20/x
  3. Step 3: Cross multiply
    214,326,139.40x = 321,489,209.10 × 77,993,808.20
  4. Step 4: Simplify right side
    214,326,139.40x = 25,074,167,712,915,096
  5. Step 5: Solve for x
    x = 25,074,167,712,915,096/214,326,139.40
  6. Step 6: Final answer
    x = 116,990,712.30

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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.