Home / 252,290,748.40-378,436,122.60-90,711,689.20

Finding the Fourth Proportional to 252,290,748.40, 378,436,122.60 and 90,711,689.20

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Solution

The fourth proportional to 252,290,748.40, 378,436,122.60 and 90,711,689.20 is: 136,067,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,290,748.40 : 378,436,122.60 = 90,711,689.20 : x
  2. Step 2: Convert to fraction form
    252,290,748.40/378,436,122.60 = 90,711,689.20/x
  3. Step 3: Cross multiply
    252,290,748.40x = 378,436,122.60 × 90,711,689.20
  4. Step 4: Simplify right side
    252,290,748.40x = 34,328,579,935,344,300
  5. Step 5: Solve for x
    x = 34,328,579,935,344,300/252,290,748.40
  6. Step 6: Final answer
    x = 136,067,533.80

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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.