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Finding the Fourth Proportional to 291,901.28, 437,870.38 and 123,390.20

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Solution

The fourth proportional to 291,901.28, 437,870.38 and 123,390.20 is: 185,093.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,901.28 : 437,870.38 = 123,390.20 : x
  2. Step 2: Convert to fraction form
    291,901.28/437,870.38 = 123,390.20/x
  3. Step 3: Cross multiply
    291,901.28x = 437,870.38 × 123,390.20
  4. Step 4: Simplify right side
    291,901.28x = 54,028,914,548.48
  5. Step 5: Solve for x
    x = 54,028,914,548.48/291,901.28
  6. Step 6: Final answer
    x = 185,093.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.