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Finding the Fourth Proportional to 219,585.80, 302,800.50 and 187,859.72

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Solution

The fourth proportional to 219,585.80, 302,800.50 and 187,859.72 is: 259,051.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,585.80 : 302,800.50 = 187,859.72 : x
  2. Step 2: Convert to fraction form
    219,585.80/302,800.50 = 187,859.72/x
  3. Step 3: Cross multiply
    219,585.80x = 302,800.50 × 187,859.72
  4. Step 4: Simplify right side
    219,585.80x = 56,884,017,145.86
  5. Step 5: Solve for x
    x = 56,884,017,145.86/219,585.80
  6. Step 6: Final answer
    x = 259,051.44

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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.