Home / 315,934.72-471,884.48-285,902.40

Finding the Fourth Proportional to 315,934.72, 471,884.48 and 285,902.40

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Solution

The fourth proportional to 315,934.72, 471,884.48 and 285,902.40 is: 427,027.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,934.72 : 471,884.48 = 285,902.40 : x
  2. Step 2: Convert to fraction form
    315,934.72/471,884.48 = 285,902.40/x
  3. Step 3: Cross multiply
    315,934.72x = 471,884.48 × 285,902.40
  4. Step 4: Simplify right side
    315,934.72x = 134,912,905,354.75
  5. Step 5: Solve for x
    x = 134,912,905,354.75/315,934.72
  6. Step 6: Final answer
    x = 427,027.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.