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Finding the Fourth Proportional to 318,117.70, 477,176.55 and 243,468.10

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Solution

The fourth proportional to 318,117.70, 477,176.55 and 243,468.10 is: 365,202.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,117.70 : 477,176.55 = 243,468.10 : x
  2. Step 2: Convert to fraction form
    318,117.70/477,176.55 = 243,468.10/x
  3. Step 3: Cross multiply
    318,117.70x = 477,176.55 × 243,468.10
  4. Step 4: Simplify right side
    318,117.70x = 116,177,267,993.06
  5. Step 5: Solve for x
    x = 116,177,267,993.06/318,117.70
  6. Step 6: Final answer
    x = 365,202.15

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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.