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Finding the Fourth Proportional to 418,031.08, 626,914.14 and 137,483.08

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Solution

The fourth proportional to 418,031.08, 626,914.14 and 137,483.08 is: 206,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,031.08 : 626,914.14 = 137,483.08 : x
  2. Step 2: Convert to fraction form
    418,031.08/626,914.14 = 137,483.08/x
  3. Step 3: Cross multiply
    418,031.08x = 626,914.14 × 137,483.08
  4. Step 4: Simplify right side
    418,031.08x = 86,190,086,862.75
  5. Step 5: Solve for x
    x = 86,190,086,862.75/418,031.08
  6. Step 6: Final answer
    x = 206,181.05

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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.