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Finding the Fourth Proportional to 220,988.55, 304,949.84 and 130,323.74

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Solution

The fourth proportional to 220,988.55, 304,949.84 and 130,323.74 is: 179,838.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,988.55 : 304,949.84 = 130,323.74 : x
  2. Step 2: Convert to fraction form
    220,988.55/304,949.84 = 130,323.74/x
  3. Step 3: Cross multiply
    220,988.55x = 304,949.84 × 130,323.74
  4. Step 4: Simplify right side
    220,988.55x = 39,742,203,661.20
  5. Step 5: Solve for x
    x = 39,742,203,661.20/220,988.55
  6. Step 6: Final answer
    x = 179,838.29

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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.