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Finding the Fourth Proportional to 274,417.92, 378,712.60 and 153,558.15

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Solution

The fourth proportional to 274,417.92, 378,712.60 and 153,558.15 is: 211,919.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,417.92 : 378,712.60 = 153,558.15 : x
  2. Step 2: Convert to fraction form
    274,417.92/378,712.60 = 153,558.15/x
  3. Step 3: Cross multiply
    274,417.92x = 378,712.60 × 153,558.15
  4. Step 4: Simplify right side
    274,417.92x = 58,154,406,429.64
  5. Step 5: Solve for x
    x = 58,154,406,429.64/274,417.92
  6. Step 6: Final answer
    x = 211,919.13

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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.