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Finding the Fourth Proportional to 493,340.11, 680,809.36 and 266,985.61

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Solution

The fourth proportional to 493,340.11, 680,809.36 and 266,985.61 is: 368,440.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,340.11 : 680,809.36 = 266,985.61 : x
  2. Step 2: Convert to fraction form
    493,340.11/680,809.36 = 266,985.61/x
  3. Step 3: Cross multiply
    493,340.11x = 680,809.36 × 266,985.61
  4. Step 4: Simplify right side
    493,340.11x = 181,766,303,458.05
  5. Step 5: Solve for x
    x = 181,766,303,458.05/493,340.11
  6. Step 6: Final answer
    x = 368,440.15

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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.