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Finding the Fourth Proportional to 201,437.28, 277,985.28 and 109,557.36

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Solution

The fourth proportional to 201,437.28, 277,985.28 and 109,557.36 is: 151,190.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,437.28 : 277,985.28 = 109,557.36 : x
  2. Step 2: Convert to fraction form
    201,437.28/277,985.28 = 109,557.36/x
  3. Step 3: Cross multiply
    201,437.28x = 277,985.28 × 109,557.36
  4. Step 4: Simplify right side
    201,437.28x = 30,455,333,395.66
  5. Step 5: Solve for x
    x = 30,455,333,395.66/201,437.28
  6. Step 6: Final answer
    x = 151,190.15

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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.