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Finding the Fourth Proportional to 312,726.96, 431,551.60 and 169,483.93

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Solution

The fourth proportional to 312,726.96, 431,551.60 and 169,483.93 is: 233,881.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,726.96 : 431,551.60 = 169,483.93 : x
  2. Step 2: Convert to fraction form
    312,726.96/431,551.60 = 169,483.93/x
  3. Step 3: Cross multiply
    312,726.96x = 431,551.60 × 169,483.93
  4. Step 4: Simplify right side
    312,726.96x = 73,141,059,663.20
  5. Step 5: Solve for x
    x = 73,141,059,663.20/312,726.96
  6. Step 6: Final answer
    x = 233,881.53

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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.