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Finding the Fourth Proportional to 275,565.81, 380,302.80 and 154,715.04

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Solution

The fourth proportional to 275,565.81, 380,302.80 and 154,715.04 is: 213,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,565.81 : 380,302.80 = 154,715.04 : x
  2. Step 2: Convert to fraction form
    275,565.81/380,302.80 = 154,715.04/x
  3. Step 3: Cross multiply
    275,565.81x = 380,302.80 × 154,715.04
  4. Step 4: Simplify right side
    275,565.81x = 58,838,562,914.11
  5. Step 5: Solve for x
    x = 58,838,562,914.11/275,565.81
  6. Step 6: Final answer
    x = 213,519.10

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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.