Home / 280,221,141.04-386,729,077.80-156,485,722.48

Finding the Fourth Proportional to 280,221,141.04, 386,729,077.80 and 156,485,722.48

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Solution

The fourth proportional to 280,221,141.04, 386,729,077.80 and 156,485,722.48 is: 215,963,645.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,221,141.04 : 386,729,077.80 = 156,485,722.48 : x
  2. Step 2: Convert to fraction form
    280,221,141.04/386,729,077.80 = 156,485,722.48/x
  3. Step 3: Cross multiply
    280,221,141.04x = 386,729,077.80 × 156,485,722.48
  4. Step 4: Simplify right side
    280,221,141.04x = 60,517,579,143,557,128
  5. Step 5: Solve for x
    x = 60,517,579,143,557,128/280,221,141.04
  6. Step 6: Final answer
    x = 215,963,645.42

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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.