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Finding the Fourth Proportional to 326,566.30, 490,036.01 and 126,860.70

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Solution

The fourth proportional to 326,566.30, 490,036.01 and 126,860.70 is: 190,363.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,566.30 : 490,036.01 = 126,860.70 : x
  2. Step 2: Convert to fraction form
    326,566.30/490,036.01 = 126,860.70/x
  3. Step 3: Cross multiply
    326,566.30x = 490,036.01 × 126,860.70
  4. Step 4: Simplify right side
    326,566.30x = 62,166,311,253.81
  5. Step 5: Solve for x
    x = 62,166,311,253.81/326,566.30
  6. Step 6: Final answer
    x = 190,363.52

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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.