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Finding the Fourth Proportional to 315,267.97, 435,080.30 and 172,035.87

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Solution

The fourth proportional to 315,267.97, 435,080.30 and 172,035.87 is: 237,415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,267.97 : 435,080.30 = 172,035.87 : x
  2. Step 2: Convert to fraction form
    315,267.97/435,080.30 = 172,035.87/x
  3. Step 3: Cross multiply
    315,267.97x = 435,080.30 × 172,035.87
  4. Step 4: Simplify right side
    315,267.97x = 74,849,419,835.40
  5. Step 5: Solve for x
    x = 74,849,419,835.40/315,267.97
  6. Step 6: Final answer
    x = 237,415.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.