Home / 278,947.60-418,421.40-166,973.20

Finding the Fourth Proportional to 278,947.60, 418,421.40 and 166,973.20

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Solution

The fourth proportional to 278,947.60, 418,421.40 and 166,973.20 is: 250,459.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,947.60 : 418,421.40 = 166,973.20 : x
  2. Step 2: Convert to fraction form
    278,947.60/418,421.40 = 166,973.20/x
  3. Step 3: Cross multiply
    278,947.60x = 418,421.40 × 166,973.20
  4. Step 4: Simplify right side
    278,947.60x = 69,865,160,106.48
  5. Step 5: Solve for x
    x = 69,865,160,106.48/278,947.60
  6. Step 6: Final answer
    x = 250,459.80

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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.