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Finding the Fourth Proportional to 261,483.64, 392,435.66 and 135,160.93

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Solution

The fourth proportional to 261,483.64, 392,435.66 and 135,160.93 is: 202,850.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,483.64 : 392,435.66 = 135,160.93 : x
  2. Step 2: Convert to fraction form
    261,483.64/392,435.66 = 135,160.93/x
  3. Step 3: Cross multiply
    261,483.64x = 392,435.66 × 135,160.93
  4. Step 4: Simplify right side
    261,483.64x = 53,041,968,115.35
  5. Step 5: Solve for x
    x = 53,041,968,115.35/261,483.64
  6. Step 6: Final answer
    x = 202,850.04

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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.