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Finding the Fourth Proportional to 353,478.80, 530,218.20 and 314,771.60

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Solution

The fourth proportional to 353,478.80, 530,218.20 and 314,771.60 is: 472,157.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,478.80 : 530,218.20 = 314,771.60 : x
  2. Step 2: Convert to fraction form
    353,478.80/530,218.20 = 314,771.60/x
  3. Step 3: Cross multiply
    353,478.80x = 530,218.20 × 314,771.60
  4. Step 4: Simplify right side
    353,478.80x = 166,897,631,163.12
  5. Step 5: Solve for x
    x = 166,897,631,163.12/353,478.80
  6. Step 6: Final answer
    x = 472,157.40

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1.5x scale

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.