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Finding the Fourth Proportional to 291,939.39, 402,876.18 and 157,803.39

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Solution

The fourth proportional to 291,939.39, 402,876.18 and 157,803.39 is: 217,768.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,939.39 : 402,876.18 = 157,803.39 : x
  2. Step 2: Convert to fraction form
    291,939.39/402,876.18 = 157,803.39/x
  3. Step 3: Cross multiply
    291,939.39x = 402,876.18 × 157,803.39
  4. Step 4: Simplify right side
    291,939.39x = 63,575,226,954.25
  5. Step 5: Solve for x
    x = 63,575,226,954.25/291,939.39
  6. Step 6: Final answer
    x = 217,768.58

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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.