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Finding the Fourth Proportional to 265,777.65, 398,729.25 and 105,862.77

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Solution

The fourth proportional to 265,777.65, 398,729.25 and 105,862.77 is: 158,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,777.65 : 398,729.25 = 105,862.77 : x
  2. Step 2: Convert to fraction form
    265,777.65/398,729.25 = 105,862.77/x
  3. Step 3: Cross multiply
    265,777.65x = 398,729.25 × 105,862.77
  4. Step 4: Simplify right side
    265,777.65x = 42,210,582,885.02
  5. Step 5: Solve for x
    x = 42,210,582,885.02/265,777.65
  6. Step 6: Final answer
    x = 158,819.16

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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.