Home / 288,005,839.12-397,449,111.36-155,846,836.60

Finding the Fourth Proportional to 288,005,839.12, 397,449,111.36 and 155,846,836.60

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Solution

The fourth proportional to 288,005,839.12, 397,449,111.36 and 155,846,836.60 is: 215,069,204.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,005,839.12 : 397,449,111.36 = 155,846,836.60 : x
  2. Step 2: Convert to fraction form
    288,005,839.12/397,449,111.36 = 155,846,836.60/x
  3. Step 3: Cross multiply
    288,005,839.12x = 397,449,111.36 × 155,846,836.60
  4. Step 4: Simplify right side
    288,005,839.12x = 61,941,186,714,937,120
  5. Step 5: Solve for x
    x = 61,941,186,714,937,120/288,005,839.12
  6. Step 6: Final answer
    x = 215,069,204.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.