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Finding the Fourth Proportional to 659,597.48, 989,467.50 and 210,212.72

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Solution

The fourth proportional to 659,597.48, 989,467.50 and 210,212.72 is: 315,341.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,597.48 : 989,467.50 = 210,212.72 : x
  2. Step 2: Convert to fraction form
    659,597.48/989,467.50 = 210,212.72/x
  3. Step 3: Cross multiply
    659,597.48x = 989,467.50 × 210,212.72
  4. Step 4: Simplify right side
    659,597.48x = 207,998,654,526.60
  5. Step 5: Solve for x
    x = 207,998,654,526.60/659,597.48
  6. Step 6: Final answer
    x = 315,341.80

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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.