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Finding the Fourth Proportional to 308,948.30, 433,149.70 and 308,948.30

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Solution

The fourth proportional to 308,948.30, 433,149.70 and 308,948.30 is: 433,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,948.30 : 433,149.70 = 308,948.30 : x
  2. Step 2: Convert to fraction form
    308,948.30/433,149.70 = 308,948.30/x
  3. Step 3: Cross multiply
    308,948.30x = 433,149.70 × 308,948.30
  4. Step 4: Simplify right side
    308,948.30x = 133,820,863,460.51
  5. Step 5: Solve for x
    x = 133,820,863,460.51/308,948.30
  6. Step 6: Final answer
    x = 433,149.70

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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.