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Finding the Fourth Proportional to 464,421.60, 640,961.10 and 273,452.76

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Solution

The fourth proportional to 464,421.60, 640,961.10 and 273,452.76 is: 377,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,421.60 : 640,961.10 = 273,452.76 : x
  2. Step 2: Convert to fraction form
    464,421.60/640,961.10 = 273,452.76/x
  3. Step 3: Cross multiply
    464,421.60x = 640,961.10 × 273,452.76
  4. Step 4: Simplify right side
    464,421.60x = 175,272,581,847.64
  5. Step 5: Solve for x
    x = 175,272,581,847.64/464,421.60
  6. Step 6: Final answer
    x = 377,399.72

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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.