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Finding the Fourth Proportional to 308,302.16, 425,511.12 and 179,280.56

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Solution

The fourth proportional to 308,302.16, 425,511.12 and 179,280.56 is: 247,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,302.16 : 425,511.12 = 179,280.56 : x
  2. Step 2: Convert to fraction form
    308,302.16/425,511.12 = 179,280.56/x
  3. Step 3: Cross multiply
    308,302.16x = 425,511.12 × 179,280.56
  4. Step 4: Simplify right side
    308,302.16x = 76,285,871,879.83
  5. Step 5: Solve for x
    x = 76,285,871,879.83/308,302.16
  6. Step 6: Final answer
    x = 247,438.66

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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.