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Finding the Fourth Proportional to 310,553.32, 428,578.79 and 174,630.06

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Solution

The fourth proportional to 310,553.32, 428,578.79 and 174,630.06 is: 240,998.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,553.32 : 428,578.79 = 174,630.06 : x
  2. Step 2: Convert to fraction form
    310,553.32/428,578.79 = 174,630.06/x
  3. Step 3: Cross multiply
    310,553.32x = 428,578.79 × 174,630.06
  4. Step 4: Simplify right side
    310,553.32x = 74,842,739,812.43
  5. Step 5: Solve for x
    x = 74,842,739,812.43/310,553.32
  6. Step 6: Final answer
    x = 240,998.03

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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.