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Finding the Fourth Proportional to 280,107.60, 420,161.40 and 191,534.10

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Solution

The fourth proportional to 280,107.60, 420,161.40 and 191,534.10 is: 287,301.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,107.60 : 420,161.40 = 191,534.10 : x
  2. Step 2: Convert to fraction form
    280,107.60/420,161.40 = 191,534.10/x
  3. Step 3: Cross multiply
    280,107.60x = 420,161.40 × 191,534.10
  4. Step 4: Simplify right side
    280,107.60x = 80,475,235,603.74
  5. Step 5: Solve for x
    x = 80,475,235,603.74/280,107.60
  6. Step 6: Final answer
    x = 287,301.15

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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.