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Finding the Fourth Proportional to 315,273.47, 435,087.89 and 172,041.37

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Solution

The fourth proportional to 315,273.47, 435,087.89 and 172,041.37 is: 237,422.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,273.47 : 435,087.89 = 172,041.37 : x
  2. Step 2: Convert to fraction form
    315,273.47/435,087.89 = 172,041.37/x
  3. Step 3: Cross multiply
    315,273.47x = 435,087.89 × 172,041.37
  4. Step 4: Simplify right side
    315,273.47x = 74,853,116,666.01
  5. Step 5: Solve for x
    x = 74,853,116,666.01/315,273.47
  6. Step 6: Final answer
    x = 237,422.82

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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.