Home / 318,439.34-439,197.54-197,512.82

Finding the Fourth Proportional to 318,439.34, 439,197.54 and 197,512.82

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Solution

The fourth proportional to 318,439.34, 439,197.54 and 197,512.82 is: 272,413.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,439.34 : 439,197.54 = 197,512.82 : x
  2. Step 2: Convert to fraction form
    318,439.34/439,197.54 = 197,512.82/x
  3. Step 3: Cross multiply
    318,439.34x = 439,197.54 × 197,512.82
  4. Step 4: Simplify right side
    318,439.34x = 86,747,144,662.46
  5. Step 5: Solve for x
    x = 86,747,144,662.46/318,439.34
  6. Step 6: Final answer
    x = 272,413.40

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1.5x scale

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.