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Finding the Fourth Proportional to 326,838.71, 490,069.37 and 126,925.72

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Solution

The fourth proportional to 326,838.71, 490,069.37 and 126,925.72 is: 190,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,838.71 : 490,069.37 = 126,925.72 : x
  2. Step 2: Convert to fraction form
    326,838.71/490,069.37 = 126,925.72/x
  3. Step 3: Cross multiply
    326,838.71x = 490,069.37 × 126,925.72
  4. Step 4: Simplify right side
    326,838.71x = 62,202,406,729.34
  5. Step 5: Solve for x
    x = 62,202,406,729.34/326,838.71
  6. Step 6: Final answer
    x = 190,315.30

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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.