Home / 278,341.34-418,003.05-207,283.28

Finding the Fourth Proportional to 278,341.34, 418,003.05 and 207,283.28

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Solution

The fourth proportional to 278,341.34, 418,003.05 and 207,283.28 is: 311,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,341.34 : 418,003.05 = 207,283.28 : x
  2. Step 2: Convert to fraction form
    278,341.34/418,003.05 = 207,283.28/x
  3. Step 3: Cross multiply
    278,341.34x = 418,003.05 × 207,283.28
  4. Step 4: Simplify right side
    278,341.34x = 86,645,043,254.00
  5. Step 5: Solve for x
    x = 86,645,043,254.00/278,341.34
  6. Step 6: Final answer
    x = 311,290.60

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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.