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Finding the Fourth Proportional to 383,590.60, 575,645.10 and 215,110.60

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Solution

The fourth proportional to 383,590.60, 575,645.10 and 215,110.60 is: 322,811.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,590.60 : 575,645.10 = 215,110.60 : x
  2. Step 2: Convert to fraction form
    383,590.60/575,645.10 = 215,110.60/x
  3. Step 3: Cross multiply
    383,590.60x = 575,645.10 × 215,110.60
  4. Step 4: Simplify right side
    383,590.60x = 123,827,362,848.06
  5. Step 5: Solve for x
    x = 123,827,362,848.06/383,590.60
  6. Step 6: Final answer
    x = 322,811.25

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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.