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Finding the Fourth Proportional to 308,161.97, 425,263.52 and 187,280.67

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Solution

The fourth proportional to 308,161.97, 425,263.52 and 187,280.67 is: 258,447.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,161.97 : 425,263.52 = 187,280.67 : x
  2. Step 2: Convert to fraction form
    308,161.97/425,263.52 = 187,280.67/x
  3. Step 3: Cross multiply
    308,161.97x = 425,263.52 × 187,280.67
  4. Step 4: Simplify right side
    308,161.97x = 79,643,636,167.56
  5. Step 5: Solve for x
    x = 79,643,636,167.56/308,161.97
  6. Step 6: Final answer
    x = 258,447.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.