Home / 280,221,139.29-386,729,075.39-156,485,720.73

Finding the Fourth Proportional to 280,221,139.29, 386,729,075.39 and 156,485,720.73

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Solution

The fourth proportional to 280,221,139.29, 386,729,075.39 and 156,485,720.73 is: 215,963,643.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,221,139.29 : 386,729,075.39 = 156,485,720.73 : x
  2. Step 2: Convert to fraction form
    280,221,139.29/386,729,075.39 = 156,485,720.73/x
  3. Step 3: Cross multiply
    280,221,139.29x = 386,729,075.39 × 156,485,720.73
  4. Step 4: Simplify right side
    280,221,139.29x = 60,517,578,088,868,224
  5. Step 5: Solve for x
    x = 60,517,578,088,868,224/280,221,139.29
  6. Step 6: Final answer
    x = 215,963,643.01

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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.