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Finding the Fourth Proportional to 308,972.20, 432,856.33 and 308,972.20

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Solution

The fourth proportional to 308,972.20, 432,856.33 and 308,972.20 is: 432,856.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,972.20 : 432,856.33 = 308,972.20 : x
  2. Step 2: Convert to fraction form
    308,972.20/432,856.33 = 308,972.20/x
  3. Step 3: Cross multiply
    308,972.20x = 432,856.33 × 308,972.20
  4. Step 4: Simplify right side
    308,972.20x = 133,740,572,564.03
  5. Step 5: Solve for x
    x = 133,740,572,564.03/308,972.20
  6. Step 6: Final answer
    x = 432,856.33

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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.