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Finding the Fourth Proportional to 228,602.84, 342,982.07 and 86,488.95

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Solution

The fourth proportional to 228,602.84, 342,982.07 and 86,488.95 is: 129,762.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,602.84 : 342,982.07 = 86,488.95 : x
  2. Step 2: Convert to fraction form
    228,602.84/342,982.07 = 86,488.95/x
  3. Step 3: Cross multiply
    228,602.84x = 342,982.07 × 86,488.95
  4. Step 4: Simplify right side
    228,602.84x = 29,664,158,670.68
  5. Step 5: Solve for x
    x = 29,664,158,670.68/228,602.84
  6. Step 6: Final answer
    x = 129,762.86

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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.