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Finding the Fourth Proportional to 252,374,461.60, 378,561,692.40 and 90,795,402.40

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Solution

The fourth proportional to 252,374,461.60, 378,561,692.40 and 90,795,402.40 is: 136,193,103.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,374,461.60 : 378,561,692.40 = 90,795,402.40 : x
  2. Step 2: Convert to fraction form
    252,374,461.60/378,561,692.40 = 90,795,402.40/x
  3. Step 3: Cross multiply
    252,374,461.60x = 378,561,692.40 × 90,795,402.40
  4. Step 4: Simplify right side
    252,374,461.60x = 34,371,661,194,683,020
  5. Step 5: Solve for x
    x = 34,371,661,194,683,020/252,374,461.60
  6. Step 6: Final answer
    x = 136,193,103.60

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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.