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Finding the Fourth Proportional to 390,228.55, 585,333.68 and 179,866.49

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Solution

The fourth proportional to 390,228.55, 585,333.68 and 179,866.49 is: 269,795.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,228.55 : 585,333.68 = 179,866.49 : x
  2. Step 2: Convert to fraction form
    390,228.55/585,333.68 = 179,866.49/x
  3. Step 3: Cross multiply
    390,228.55x = 585,333.68 × 179,866.49
  4. Step 4: Simplify right side
    390,228.55x = 105,281,910,674.38
  5. Step 5: Solve for x
    x = 105,281,910,674.38/390,228.55
  6. Step 6: Final answer
    x = 269,795.51

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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.