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Finding the Fourth Proportional to 265,740,892.80, 398,611,339.20 and 149,036,449.20

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Solution

The fourth proportional to 265,740,892.80, 398,611,339.20 and 149,036,449.20 is: 223,554,673.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,740,892.80 : 398,611,339.20 = 149,036,449.20 : x
  2. Step 2: Convert to fraction form
    265,740,892.80/398,611,339.20 = 149,036,449.20/x
  3. Step 3: Cross multiply
    265,740,892.80x = 398,611,339.20 × 149,036,449.20
  4. Step 4: Simplify right side
    265,740,892.80x = 59,407,618,605,224,760
  5. Step 5: Solve for x
    x = 59,407,618,605,224,760/265,740,892.80
  6. Step 6: Final answer
    x = 223,554,673.80

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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.