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Finding the Fourth Proportional to 551,405.20, 826,670.40 and 302,087.20

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Solution

The fourth proportional to 551,405.20, 826,670.40 and 302,087.20 is: 452,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,405.20 : 826,670.40 = 302,087.20 : x
  2. Step 2: Convert to fraction form
    551,405.20/826,670.40 = 302,087.20/x
  3. Step 3: Cross multiply
    551,405.20x = 826,670.40 × 302,087.20
  4. Step 4: Simplify right side
    551,405.20x = 249,726,546,458.88
  5. Step 5: Solve for x
    x = 249,726,546,458.88/551,405.20
  6. Step 6: Final answer
    x = 452,891.17

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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.