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Finding the Fourth Proportional to 268,020.71, 402,030.66 and 208,900.70

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Solution

The fourth proportional to 268,020.71, 402,030.66 and 208,900.70 is: 313,350.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,020.71 : 402,030.66 = 208,900.70 : x
  2. Step 2: Convert to fraction form
    268,020.71/402,030.66 = 208,900.70/x
  3. Step 3: Cross multiply
    268,020.71x = 402,030.66 × 208,900.70
  4. Step 4: Simplify right side
    268,020.71x = 83,984,486,295.46
  5. Step 5: Solve for x
    x = 83,984,486,295.46/268,020.71
  6. Step 6: Final answer
    x = 313,350.73

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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.