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Finding the Fourth Proportional to 278,210.88, 417,314.88 and 240,658.56

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Solution

The fourth proportional to 278,210.88, 417,314.88 and 240,658.56 is: 360,986.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,210.88 : 417,314.88 = 240,658.56 : x
  2. Step 2: Convert to fraction form
    278,210.88/417,314.88 = 240,658.56/x
  3. Step 3: Cross multiply
    278,210.88x = 417,314.88 × 240,658.56
  4. Step 4: Simplify right side
    278,210.88x = 100,430,398,087.37
  5. Step 5: Solve for x
    x = 100,430,398,087.37/278,210.88
  6. Step 6: Final answer
    x = 360,986.59

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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.