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Finding the Fourth Proportional to 172,356.30, 258,534.45 and 154,860.30

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Solution

The fourth proportional to 172,356.30, 258,534.45 and 154,860.30 is: 232,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,356.30 : 258,534.45 = 154,860.30 : x
  2. Step 2: Convert to fraction form
    172,356.30/258,534.45 = 154,860.30/x
  3. Step 3: Cross multiply
    172,356.30x = 258,534.45 × 154,860.30
  4. Step 4: Simplify right side
    172,356.30x = 40,036,722,487.34
  5. Step 5: Solve for x
    x = 40,036,722,487.34/172,356.30
  6. Step 6: Final answer
    x = 232,290.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.