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Finding the Fourth Proportional to 397,752.72, 549,101.88 and 306,904.56

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Solution

The fourth proportional to 397,752.72, 549,101.88 and 306,904.56 is: 423,685.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,752.72 : 549,101.88 = 306,904.56 : x
  2. Step 2: Convert to fraction form
    397,752.72/549,101.88 = 306,904.56/x
  3. Step 3: Cross multiply
    397,752.72x = 549,101.88 × 306,904.56
  4. Step 4: Simplify right side
    397,752.72x = 168,521,870,876.57
  5. Step 5: Solve for x
    x = 168,521,870,876.57/397,752.72
  6. Step 6: Final answer
    x = 423,685.02

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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.