Home / 257,417,997.30-386,015,021.55-84,828,122.10

Finding the Fourth Proportional to 257,417,997.30, 386,015,021.55 and 84,828,122.10

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Solution

The fourth proportional to 257,417,997.30, 386,015,021.55 and 84,828,122.10 is: 127,205,283.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,417,997.30 : 386,015,021.55 = 84,828,122.10 : x
  2. Step 2: Convert to fraction form
    257,417,997.30/386,015,021.55 = 84,828,122.10/x
  3. Step 3: Cross multiply
    257,417,997.30x = 386,015,021.55 × 84,828,122.10
  4. Step 4: Simplify right side
    257,417,997.30x = 32,744,929,380,477,528
  5. Step 5: Solve for x
    x = 32,744,929,380,477,528/257,417,997.30
  6. Step 6: Final answer
    x = 127,205,283.72

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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.