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Finding the Fourth Proportional to 273,220, 377,046.56 and 153,988

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Solution

The fourth proportional to 273,220, 377,046.56 and 153,988 is: 212,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,220 : 377,046.56 = 153,988 : x
  2. Step 2: Convert to fraction form
    273,220/377,046.56 = 153,988/x
  3. Step 3: Cross multiply
    273,220x = 377,046.56 × 153,988
  4. Step 4: Simplify right side
    273,220x = 58,060,645,681.28
  5. Step 5: Solve for x
    x = 58,060,645,681.28/273,220
  6. Step 6: Final answer
    x = 212,505.11

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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.