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Finding the Fourth Proportional to 397,788.96, 549,005.52 and 225,749.22

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Solution

The fourth proportional to 397,788.96, 549,005.52 and 225,749.22 is: 311,566.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,788.96 : 549,005.52 = 225,749.22 : x
  2. Step 2: Convert to fraction form
    397,788.96/549,005.52 = 225,749.22/x
  3. Step 3: Cross multiply
    397,788.96x = 549,005.52 × 225,749.22
  4. Step 4: Simplify right side
    397,788.96x = 123,937,567,915.69
  5. Step 5: Solve for x
    x = 123,937,567,915.69/397,788.96
  6. Step 6: Final answer
    x = 311,566.13

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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.