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Finding the Fourth Proportional to 318,487.34, 439,526.98 and 197,667.54

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Solution

The fourth proportional to 318,487.34, 439,526.98 and 197,667.54 is: 272,790.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,487.34 : 439,526.98 = 197,667.54 : x
  2. Step 2: Convert to fraction form
    318,487.34/439,526.98 = 197,667.54/x
  3. Step 3: Cross multiply
    318,487.34x = 439,526.98 × 197,667.54
  4. Step 4: Simplify right side
    318,487.34x = 86,880,217,703.25
  5. Step 5: Solve for x
    x = 86,880,217,703.25/318,487.34
  6. Step 6: Final answer
    x = 272,790.17

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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.