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Finding the Fourth Proportional to 274,170.68, 378,353.40 and 153,312.20

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Solution

The fourth proportional to 274,170.68, 378,353.40 and 153,312.20 is: 211,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,170.68 : 378,353.40 = 153,312.20 : x
  2. Step 2: Convert to fraction form
    274,170.68/378,353.40 = 153,312.20/x
  3. Step 3: Cross multiply
    274,170.68x = 378,353.40 × 153,312.20
  4. Step 4: Simplify right side
    274,170.68x = 58,006,192,131.48
  5. Step 5: Solve for x
    x = 58,006,192,131.48/274,170.68
  6. Step 6: Final answer
    x = 211,569.64

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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.