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Finding the Fourth Proportional to 421,650.72, 581,885.04 and 230,665.44

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Solution

The fourth proportional to 421,650.72, 581,885.04 and 230,665.44 is: 318,322.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,650.72 : 581,885.04 = 230,665.44 : x
  2. Step 2: Convert to fraction form
    421,650.72/581,885.04 = 230,665.44/x
  3. Step 3: Cross multiply
    421,650.72x = 581,885.04 × 230,665.44
  4. Step 4: Simplify right side
    421,650.72x = 134,220,768,781.02
  5. Step 5: Solve for x
    x = 134,220,768,781.02/421,650.72
  6. Step 6: Final answer
    x = 318,322.16

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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.