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Finding the Fourth Proportional to 328,061.71, 490,295.03 and 239,501.71

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Solution

The fourth proportional to 328,061.71, 490,295.03 and 239,501.71 is: 357,940.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,061.71 : 490,295.03 = 239,501.71 : x
  2. Step 2: Convert to fraction form
    328,061.71/490,295.03 = 239,501.71/x
  3. Step 3: Cross multiply
    328,061.71x = 490,295.03 × 239,501.71
  4. Step 4: Simplify right side
    328,061.71x = 117,426,498,089.50
  5. Step 5: Solve for x
    x = 117,426,498,089.50/328,061.71
  6. Step 6: Final answer
    x = 357,940.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.