Home / 280,164,280.88-386,622,671.76-154,721,784.64

Finding the Fourth Proportional to 280,164,280.88, 386,622,671.76 and 154,721,784.64

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Solution

The fourth proportional to 280,164,280.88, 386,622,671.76 and 154,721,784.64 is: 213,513,833.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,164,280.88 : 386,622,671.76 = 154,721,784.64 : x
  2. Step 2: Convert to fraction form
    280,164,280.88/386,622,671.76 = 154,721,784.64/x
  3. Step 3: Cross multiply
    280,164,280.88x = 386,622,671.76 × 154,721,784.64
  4. Step 4: Simplify right side
    280,164,280.88x = 59,818,949,756,992,120
  5. Step 5: Solve for x
    x = 59,818,949,756,992,120/280,164,280.88
  6. Step 6: Final answer
    x = 213,513,833.99

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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.