Home / 218,829,689.40-328,244,534.10-91,162,284.60

Finding the Fourth Proportional to 218,829,689.40, 328,244,534.10 and 91,162,284.60

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Solution

The fourth proportional to 218,829,689.40, 328,244,534.10 and 91,162,284.60 is: 136,743,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,829,689.40 : 328,244,534.10 = 91,162,284.60 : x
  2. Step 2: Convert to fraction form
    218,829,689.40/328,244,534.10 = 91,162,284.60/x
  3. Step 3: Cross multiply
    218,829,689.40x = 328,244,534.10 × 91,162,284.60
  4. Step 4: Simplify right side
    218,829,689.40x = 29,923,521,636,018,604
  5. Step 5: Solve for x
    x = 29,923,521,636,018,604/218,829,689.40
  6. Step 6: Final answer
    x = 136,743,426.90

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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.