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Finding the Fourth Proportional to 278,567.80, 417,851.70 and 101,080.60

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Solution

The fourth proportional to 278,567.80, 417,851.70 and 101,080.60 is: 151,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,567.80 : 417,851.70 = 101,080.60 : x
  2. Step 2: Convert to fraction form
    278,567.80/417,851.70 = 101,080.60/x
  3. Step 3: Cross multiply
    278,567.80x = 417,851.70 × 101,080.60
  4. Step 4: Simplify right side
    278,567.80x = 42,236,700,547.02
  5. Step 5: Solve for x
    x = 42,236,700,547.02/278,567.80
  6. Step 6: Final answer
    x = 151,620.90

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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.