Home / 214,541,344.80-321,812,017.20-128,545,005.60

Finding the Fourth Proportional to 214,541,344.80, 321,812,017.20 and 128,545,005.60

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Solution

The fourth proportional to 214,541,344.80, 321,812,017.20 and 128,545,005.60 is: 192,817,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,541,344.80 : 321,812,017.20 = 128,545,005.60 : x
  2. Step 2: Convert to fraction form
    214,541,344.80/321,812,017.20 = 128,545,005.60/x
  3. Step 3: Cross multiply
    214,541,344.80x = 321,812,017.20 × 128,545,005.60
  4. Step 4: Simplify right side
    214,541,344.80x = 41,367,327,553,121,296
  5. Step 5: Solve for x
    x = 41,367,327,553,121,296/214,541,344.80
  6. Step 6: Final answer
    x = 192,817,508.40

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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.