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Finding the Fourth Proportional to 397,940, 549,623.76 and 263,570.72

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Solution

The fourth proportional to 397,940, 549,623.76 and 263,570.72 is: 364,036.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,940 : 549,623.76 = 263,570.72 : x
  2. Step 2: Convert to fraction form
    397,940/549,623.76 = 263,570.72/x
  3. Step 3: Cross multiply
    397,940x = 549,623.76 × 263,570.72
  4. Step 4: Simplify right side
    397,940x = 144,864,730,152.31
  5. Step 5: Solve for x
    x = 144,864,730,152.31/397,940
  6. Step 6: Final answer
    x = 364,036.61

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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.