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Finding the Fourth Proportional to 397,590.32, 596,390.32 and 220,443.28

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Solution

The fourth proportional to 397,590.32, 596,390.32 and 220,443.28 is: 330,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,590.32 : 596,390.32 = 220,443.28 : x
  2. Step 2: Convert to fraction form
    397,590.32/596,390.32 = 220,443.28/x
  3. Step 3: Cross multiply
    397,590.32x = 596,390.32 × 220,443.28
  4. Step 4: Simplify right side
    397,590.32x = 131,470,238,301.05
  5. Step 5: Solve for x
    x = 131,470,238,301.05/397,590.32
  6. Step 6: Final answer
    x = 330,667.60

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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.