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Finding the Fourth Proportional to 272,361.60, 408,608.03 and 85,373.10

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Solution

The fourth proportional to 272,361.60, 408,608.03 and 85,373.10 is: 128,080.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,361.60 : 408,608.03 = 85,373.10 : x
  2. Step 2: Convert to fraction form
    272,361.60/408,608.03 = 85,373.10/x
  3. Step 3: Cross multiply
    272,361.60x = 408,608.03 × 85,373.10
  4. Step 4: Simplify right side
    272,361.60x = 34,884,133,779.13
  5. Step 5: Solve for x
    x = 34,884,133,779.13/272,361.60
  6. Step 6: Final answer
    x = 128,080.22

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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.