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Finding the Fourth Proportional to 508,693.09, 763,031.87 and 171,970.28

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Solution

The fourth proportional to 508,693.09, 763,031.87 and 171,970.28 is: 257,952.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,693.09 : 763,031.87 = 171,970.28 : x
  2. Step 2: Convert to fraction form
    508,693.09/763,031.87 = 171,970.28/x
  3. Step 3: Cross multiply
    508,693.09x = 763,031.87 × 171,970.28
  4. Step 4: Simplify right side
    508,693.09x = 131,218,804,332.82
  5. Step 5: Solve for x
    x = 131,218,804,332.82/508,693.09
  6. Step 6: Final answer
    x = 257,952.79

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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.