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Finding the Fourth Proportional to 320,419.80, 480,209.23 and 235,783.66

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Solution

The fourth proportional to 320,419.80, 480,209.23 and 235,783.66 is: 353,366.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,419.80 : 480,209.23 = 235,783.66 : x
  2. Step 2: Convert to fraction form
    320,419.80/480,209.23 = 235,783.66/x
  3. Step 3: Cross multiply
    320,419.80x = 480,209.23 × 235,783.66
  4. Step 4: Simplify right side
    320,419.80x = 113,225,490,472.92
  5. Step 5: Solve for x
    x = 113,225,490,472.92/320,419.80
  6. Step 6: Final answer
    x = 353,366.09

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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.