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Finding the Fourth Proportional to 660,158.28, 990,078.12 and 304,830.72

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Solution

The fourth proportional to 660,158.28, 990,078.12 and 304,830.72 is: 457,172.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,158.28 : 990,078.12 = 304,830.72 : x
  2. Step 2: Convert to fraction form
    660,158.28/990,078.12 = 304,830.72/x
  3. Step 3: Cross multiply
    660,158.28x = 990,078.12 × 304,830.72
  4. Step 4: Simplify right side
    660,158.28x = 301,806,226,175.85
  5. Step 5: Solve for x
    x = 301,806,226,175.85/660,158.28
  6. Step 6: Final answer
    x = 457,172.52

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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.