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Finding the Fourth Proportional to 274,647.40, 411,971.10 and 169,124.20

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Solution

The fourth proportional to 274,647.40, 411,971.10 and 169,124.20 is: 253,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,647.40 : 411,971.10 = 169,124.20 : x
  2. Step 2: Convert to fraction form
    274,647.40/411,971.10 = 169,124.20/x
  3. Step 3: Cross multiply
    274,647.40x = 411,971.10 × 169,124.20
  4. Step 4: Simplify right side
    274,647.40x = 69,674,282,710.62
  5. Step 5: Solve for x
    x = 69,674,282,710.62/274,647.40
  6. Step 6: Final answer
    x = 253,686.30

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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.