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Finding the Fourth Proportional to 306,688.32, 423,230.40 and 179,340.48

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Solution

The fourth proportional to 306,688.32, 423,230.40 and 179,340.48 is: 247,490.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,688.32 : 423,230.40 = 179,340.48 : x
  2. Step 2: Convert to fraction form
    306,688.32/423,230.40 = 179,340.48/x
  3. Step 3: Cross multiply
    306,688.32x = 423,230.40 × 179,340.48
  4. Step 4: Simplify right side
    306,688.32x = 75,902,343,086.59
  5. Step 5: Solve for x
    x = 75,902,343,086.59/306,688.32
  6. Step 6: Final answer
    x = 247,490.17

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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.