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Finding the Fourth Proportional to 499,402.22, 749,636.41 and 215,233.01

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Solution

The fourth proportional to 499,402.22, 749,636.41 and 215,233.01 is: 323,079.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,402.22 : 749,636.41 = 215,233.01 : x
  2. Step 2: Convert to fraction form
    499,402.22/749,636.41 = 215,233.01/x
  3. Step 3: Cross multiply
    499,402.22x = 749,636.41 × 215,233.01
  4. Step 4: Simplify right side
    499,402.22x = 161,346,496,643.63
  5. Step 5: Solve for x
    x = 161,346,496,643.63/499,402.22
  6. Step 6: Final answer
    x = 323,079.26

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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.