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Finding the Fourth Proportional to 308,122.85, 432,616.15 and 308,122.85

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Solution

The fourth proportional to 308,122.85, 432,616.15 and 308,122.85 is: 432,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,122.85 : 432,616.15 = 308,122.85 : x
  2. Step 2: Convert to fraction form
    308,122.85/432,616.15 = 308,122.85/x
  3. Step 3: Cross multiply
    308,122.85x = 432,616.15 × 308,122.85
  4. Step 4: Simplify right side
    308,122.85x = 133,298,921,094.03
  5. Step 5: Solve for x
    x = 133,298,921,094.03/308,122.85
  6. Step 6: Final answer
    x = 432,616.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.