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Finding the Fourth Proportional to 265,842.76, 398,804.04 and 85,868.08

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Solution

The fourth proportional to 265,842.76, 398,804.04 and 85,868.08 is: 128,815.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,842.76 : 398,804.04 = 85,868.08 : x
  2. Step 2: Convert to fraction form
    265,842.76/398,804.04 = 85,868.08/x
  3. Step 3: Cross multiply
    265,842.76x = 398,804.04 × 85,868.08
  4. Step 4: Simplify right side
    265,842.76x = 34,244,537,211.04
  5. Step 5: Solve for x
    x = 34,244,537,211.04/265,842.76
  6. Step 6: Final answer
    x = 128,815.01

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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.