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Finding the Fourth Proportional to 279,044,101.80, 418,566,152.70 and 218,511,570.60

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Solution

The fourth proportional to 279,044,101.80, 418,566,152.70 and 218,511,570.60 is: 327,767,355.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,044,101.80 : 418,566,152.70 = 218,511,570.60 : x
  2. Step 2: Convert to fraction form
    279,044,101.80/418,566,152.70 = 218,511,570.60/x
  3. Step 3: Cross multiply
    279,044,101.80x = 418,566,152.70 × 218,511,570.60
  4. Step 4: Simplify right side
    279,044,101.80x = 91,461,547,426,476,432
  5. Step 5: Solve for x
    x = 91,461,547,426,476,432/279,044,101.80
  6. Step 6: Final answer
    x = 327,767,355.90

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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.