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Finding the Fourth Proportional to 274,748.32, 379,148.16 and 153,888.48

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Solution

The fourth proportional to 274,748.32, 379,148.16 and 153,888.48 is: 212,363.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,748.32 : 379,148.16 = 153,888.48 : x
  2. Step 2: Convert to fraction form
    274,748.32/379,148.16 = 153,888.48/x
  3. Step 3: Cross multiply
    274,748.32x = 379,148.16 × 153,888.48
  4. Step 4: Simplify right side
    274,748.32x = 58,346,534,037.20
  5. Step 5: Solve for x
    x = 58,346,534,037.20/274,748.32
  6. Step 6: Final answer
    x = 212,363.57

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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.