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Finding the Fourth Proportional to 308,121.60, 432,614.40 and 308,121.60

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Solution

The fourth proportional to 308,121.60, 432,614.40 and 308,121.60 is: 432,614.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,121.60 : 432,614.40 = 308,121.60 : x
  2. Step 2: Convert to fraction form
    308,121.60/432,614.40 = 308,121.60/x
  3. Step 3: Cross multiply
    308,121.60x = 432,614.40 × 308,121.60
  4. Step 4: Simplify right side
    308,121.60x = 133,297,841,111.04
  5. Step 5: Solve for x
    x = 133,297,841,111.04/308,121.60
  6. Step 6: Final answer
    x = 432,614.40

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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.