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Finding the Fourth Proportional to 581,399.28, 871,570.80 and 207,334.80

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Solution

The fourth proportional to 581,399.28, 871,570.80 and 207,334.80 is: 310,813.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,399.28 : 871,570.80 = 207,334.80 : x
  2. Step 2: Convert to fraction form
    581,399.28/871,570.80 = 207,334.80/x
  3. Step 3: Cross multiply
    581,399.28x = 871,570.80 × 207,334.80
  4. Step 4: Simplify right side
    581,399.28x = 180,706,957,503.84
  5. Step 5: Solve for x
    x = 180,706,957,503.84/581,399.28
  6. Step 6: Final answer
    x = 310,813.87

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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.