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Finding the Fourth Proportional to 280,055.94, 386,461.83 and 159,180.45

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Solution

The fourth proportional to 280,055.94, 386,461.83 and 159,180.45 is: 219,660.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,055.94 : 386,461.83 = 159,180.45 : x
  2. Step 2: Convert to fraction form
    280,055.94/386,461.83 = 159,180.45/x
  3. Step 3: Cross multiply
    280,055.94x = 386,461.83 × 159,180.45
  4. Step 4: Simplify right side
    280,055.94x = 61,517,168,007.22
  5. Step 5: Solve for x
    x = 61,517,168,007.22/280,055.94
  6. Step 6: Final answer
    x = 219,660.29

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1.5x scale

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.