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Finding the Fourth Proportional to 304,069.28, 456,130.80 and 79,428

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Solution

The fourth proportional to 304,069.28, 456,130.80 and 79,428 is: 119,149.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,069.28 : 456,130.80 = 79,428 : x
  2. Step 2: Convert to fraction form
    304,069.28/456,130.80 = 79,428/x
  3. Step 3: Cross multiply
    304,069.28x = 456,130.80 × 79,428
  4. Step 4: Simplify right side
    304,069.28x = 36,229,557,182.40
  5. Step 5: Solve for x
    x = 36,229,557,182.40/304,069.28
  6. Step 6: Final answer
    x = 119,149.02

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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.