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Finding the Fourth Proportional to 448,315.36, 672,140.88 and 270,780.86

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Solution

The fourth proportional to 448,315.36, 672,140.88 and 270,780.86 is: 405,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,315.36 : 672,140.88 = 270,780.86 : x
  2. Step 2: Convert to fraction form
    448,315.36/672,140.88 = 270,780.86/x
  3. Step 3: Cross multiply
    448,315.36x = 672,140.88 × 270,780.86
  4. Step 4: Simplify right side
    448,315.36x = 182,002,887,207.91
  5. Step 5: Solve for x
    x = 182,002,887,207.91/448,315.36
  6. Step 6: Final answer
    x = 405,970.67

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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.