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Finding the Fourth Proportional to 272,549, 376,123.38 and 153,317

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Solution

The fourth proportional to 272,549, 376,123.38 and 153,317 is: 211,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,549 : 376,123.38 = 153,317 : x
  2. Step 2: Convert to fraction form
    272,549/376,123.38 = 153,317/x
  3. Step 3: Cross multiply
    272,549x = 376,123.38 × 153,317
  4. Step 4: Simplify right side
    272,549x = 57,666,108,251.46
  5. Step 5: Solve for x
    x = 57,666,108,251.46/272,549
  6. Step 6: Final answer
    x = 211,580.70

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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.