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Finding the Fourth Proportional to 248,785.50, 342,976.15 and 210,390.66

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Solution

The fourth proportional to 248,785.50, 342,976.15 and 210,390.66 is: 290,044.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,785.50 : 342,976.15 = 210,390.66 : x
  2. Step 2: Convert to fraction form
    248,785.50/342,976.15 = 210,390.66/x
  3. Step 3: Cross multiply
    248,785.50x = 342,976.15 × 210,390.66
  4. Step 4: Simplify right side
    248,785.50x = 72,158,978,562.76
  5. Step 5: Solve for x
    x = 72,158,978,562.76/248,785.50
  6. Step 6: Final answer
    x = 290,044.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.