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Finding the Fourth Proportional to 220,913.42, 304,869.15 and 125,429

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Solution

The fourth proportional to 220,913.42, 304,869.15 and 125,429 is: 173,096.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,913.42 : 304,869.15 = 125,429 : x
  2. Step 2: Convert to fraction form
    220,913.42/304,869.15 = 125,429/x
  3. Step 3: Cross multiply
    220,913.42x = 304,869.15 × 125,429
  4. Step 4: Simplify right side
    220,913.42x = 38,239,432,615.35
  5. Step 5: Solve for x
    x = 38,239,432,615.35/220,913.42
  6. Step 6: Final answer
    x = 173,096.92

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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.