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Finding the Fourth Proportional to 219,328.60, 328,992.90 and 187,835.80

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Solution

The fourth proportional to 219,328.60, 328,992.90 and 187,835.80 is: 281,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,328.60 : 328,992.90 = 187,835.80 : x
  2. Step 2: Convert to fraction form
    219,328.60/328,992.90 = 187,835.80/x
  3. Step 3: Cross multiply
    219,328.60x = 328,992.90 × 187,835.80
  4. Step 4: Simplify right side
    219,328.60x = 61,796,644,565.82
  5. Step 5: Solve for x
    x = 61,796,644,565.82/219,328.60
  6. Step 6: Final answer
    x = 281,753.70

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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.