Home / 288,028,419.52-397,480,222.56-155,869,382.92

Finding the Fourth Proportional to 288,028,419.52, 397,480,222.56 and 155,869,382.92

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Solution

The fourth proportional to 288,028,419.52, 397,480,222.56 and 155,869,382.92 is: 215,100,291.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,028,419.52 : 397,480,222.56 = 155,869,382.92 : x
  2. Step 2: Convert to fraction form
    288,028,419.52/397,480,222.56 = 155,869,382.92/x
  3. Step 3: Cross multiply
    288,028,419.52x = 397,480,222.56 × 155,869,382.92
  4. Step 4: Simplify right side
    288,028,419.52x = 61,954,997,013,331,456
  5. Step 5: Solve for x
    x = 61,954,997,013,331,456/288,028,419.52
  6. Step 6: Final answer
    x = 215,100,291.55

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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.