Home / 278,214.30-417,321.45-166,021.20

Finding the Fourth Proportional to 278,214.30, 417,321.45 and 166,021.20

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Solution

The fourth proportional to 278,214.30, 417,321.45 and 166,021.20 is: 249,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,214.30 : 417,321.45 = 166,021.20 : x
  2. Step 2: Convert to fraction form
    278,214.30/417,321.45 = 166,021.20/x
  3. Step 3: Cross multiply
    278,214.30x = 417,321.45 × 166,021.20
  4. Step 4: Simplify right side
    278,214.30x = 69,284,207,914.74
  5. Step 5: Solve for x
    x = 69,284,207,914.74/278,214.30
  6. Step 6: Final answer
    x = 249,031.80

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1.5x scale

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.