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Finding the Fourth Proportional to 220,886.71, 304,815.65 and 134,989.40

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Solution

The fourth proportional to 220,886.71, 304,815.65 and 134,989.40 is: 186,280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,886.71 : 304,815.65 = 134,989.40 : x
  2. Step 2: Convert to fraction form
    220,886.71/304,815.65 = 134,989.40/x
  3. Step 3: Cross multiply
    220,886.71x = 304,815.65 × 134,989.40
  4. Step 4: Simplify right side
    220,886.71x = 41,146,881,791.20
  5. Step 5: Solve for x
    x = 41,146,881,791.20/220,886.71
  6. Step 6: Final answer
    x = 186,280.48

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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.