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Finding the Fourth Proportional to 259,706.35, 390,150.66 and 187,880.79

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Solution

The fourth proportional to 259,706.35, 390,150.66 and 187,880.79 is: 282,248.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,706.35 : 390,150.66 = 187,880.79 : x
  2. Step 2: Convert to fraction form
    259,706.35/390,150.66 = 187,880.79/x
  3. Step 3: Cross multiply
    259,706.35x = 390,150.66 × 187,880.79
  4. Step 4: Simplify right side
    259,706.35x = 73,301,815,664.90
  5. Step 5: Solve for x
    x = 73,301,815,664.90/259,706.35
  6. Step 6: Final answer
    x = 282,248.84

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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.