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Finding the Fourth Proportional to 479,281,772.70, 719,020,338.57 and 216,840,266.10

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Solution

The fourth proportional to 479,281,772.70, 719,020,338.57 and 216,840,266.10 is: 325,304,592.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,281,772.70 : 719,020,338.57 = 216,840,266.10 : x
  2. Step 2: Convert to fraction form
    479,281,772.70/719,020,338.57 = 216,840,266.10/x
  3. Step 3: Cross multiply
    479,281,772.70x = 719,020,338.57 × 216,840,266.10
  4. Step 4: Simplify right side
    479,281,772.70x = 155,912,561,546,830,912
  5. Step 5: Solve for x
    x = 155,912,561,546,830,912/479,281,772.70
  6. Step 6: Final answer
    x = 325,304,592.05

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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.