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Finding the Fourth Proportional to 272,552, 376,127.52 and 153,320

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Solution

The fourth proportional to 272,552, 376,127.52 and 153,320 is: 211,584.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,552 : 376,127.52 = 153,320 : x
  2. Step 2: Convert to fraction form
    272,552/376,127.52 = 153,320/x
  3. Step 3: Cross multiply
    272,552x = 376,127.52 × 153,320
  4. Step 4: Simplify right side
    272,552x = 57,667,871,366.40
  5. Step 5: Solve for x
    x = 57,667,871,366.40/272,552
  6. Step 6: Final answer
    x = 211,584.84

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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.