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Finding the Fourth Proportional to 326,874.09, 490,343.01 and 127,210.71

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Solution

The fourth proportional to 326,874.09, 490,343.01 and 127,210.71 is: 190,828.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,874.09 : 490,343.01 = 127,210.71 : x
  2. Step 2: Convert to fraction form
    326,874.09/490,343.01 = 127,210.71/x
  3. Step 3: Cross multiply
    326,874.09x = 490,343.01 × 127,210.71
  4. Step 4: Simplify right side
    326,874.09x = 62,376,882,445.64
  5. Step 5: Solve for x
    x = 62,376,882,445.64/326,874.09
  6. Step 6: Final answer
    x = 190,828.47

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1.5x scale

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.