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Finding the Fourth Proportional to 493,290, 680,740.81 and 266,935.50

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Solution

The fourth proportional to 493,290, 680,740.81 and 266,935.50 is: 368,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,290 : 680,740.81 = 266,935.50 : x
  2. Step 2: Convert to fraction form
    493,290/680,740.81 = 266,935.50/x
  3. Step 3: Cross multiply
    493,290x = 680,740.81 × 266,935.50
  4. Step 4: Simplify right side
    493,290x = 181,713,887,820.42
  5. Step 5: Solve for x
    x = 181,713,887,820.42/493,290
  6. Step 6: Final answer
    x = 368,371.32

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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.