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Finding the Fourth Proportional to 254,012.79, 380,970.61 and 127,618.01

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Solution

The fourth proportional to 254,012.79, 380,970.61 and 127,618.01 is: 191,402.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,012.79 : 380,970.61 = 127,618.01 : x
  2. Step 2: Convert to fraction form
    254,012.79/380,970.61 = 127,618.01/x
  3. Step 3: Cross multiply
    254,012.79x = 380,970.61 × 127,618.01
  4. Step 4: Simplify right side
    254,012.79x = 48,618,711,116.69
  5. Step 5: Solve for x
    x = 48,618,711,116.69/254,012.79
  6. Step 6: Final answer
    x = 191,402.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.