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Finding the Fourth Proportional to 288,634.23, 432,477.93 and 203,980.86

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Solution

The fourth proportional to 288,634.23, 432,477.93 and 203,980.86 is: 305,636.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,634.23 : 432,477.93 = 203,980.86 : x
  2. Step 2: Convert to fraction form
    288,634.23/432,477.93 = 203,980.86/x
  3. Step 3: Cross multiply
    288,634.23x = 432,477.93 × 203,980.86
  4. Step 4: Simplify right side
    288,634.23x = 88,217,220,092.42
  5. Step 5: Solve for x
    x = 88,217,220,092.42/288,634.23
  6. Step 6: Final answer
    x = 305,636.72

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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.