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Finding the Fourth Proportional to 274,171.35, 378,357.69 and 153,312.68

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Solution

The fourth proportional to 274,171.35, 378,357.69 and 153,312.68 is: 211,572.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,171.35 : 378,357.69 = 153,312.68 : x
  2. Step 2: Convert to fraction form
    274,171.35/378,357.69 = 153,312.68/x
  3. Step 3: Cross multiply
    274,171.35x = 378,357.69 × 153,312.68
  4. Step 4: Simplify right side
    274,171.35x = 58,007,029,560.72
  5. Step 5: Solve for x
    x = 58,007,029,560.72/274,171.35
  6. Step 6: Final answer
    x = 211,572.18

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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.