Home / 257,418,005.80-386,015,034.30-84,828,130.60

Finding the Fourth Proportional to 257,418,005.80, 386,015,034.30 and 84,828,130.60

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Solution

The fourth proportional to 257,418,005.80, 386,015,034.30 and 84,828,130.60 is: 127,205,296.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,418,005.80 : 386,015,034.30 = 84,828,130.60 : x
  2. Step 2: Convert to fraction form
    257,418,005.80/386,015,034.30 = 84,828,130.60/x
  3. Step 3: Cross multiply
    257,418,005.80x = 386,015,034.30 × 84,828,130.60
  4. Step 4: Simplify right side
    257,418,005.80x = 32,744,933,743,163,880
  5. Step 5: Solve for x
    x = 32,744,933,743,163,880/257,418,005.80
  6. Step 6: Final answer
    x = 127,205,296.46

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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.