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Finding the Fourth Proportional to 308,129.96, 425,222.16 and 180,807.68

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Solution

The fourth proportional to 308,129.96, 425,222.16 and 180,807.68 is: 249,516.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,129.96 : 425,222.16 = 180,807.68 : x
  2. Step 2: Convert to fraction form
    308,129.96/425,222.16 = 180,807.68/x
  3. Step 3: Cross multiply
    308,129.96x = 425,222.16 × 180,807.68
  4. Step 4: Simplify right side
    308,129.96x = 76,883,432,234.19
  5. Step 5: Solve for x
    x = 76,883,432,234.19/308,129.96
  6. Step 6: Final answer
    x = 249,516.25

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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.