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Finding the Fourth Proportional to 659,354.76, 989,181.32 and 210,101.22

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Solution

The fourth proportional to 659,354.76, 989,181.32 and 210,101.22 is: 315,199.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,354.76 : 989,181.32 = 210,101.22 : x
  2. Step 2: Convert to fraction form
    659,354.76/989,181.32 = 210,101.22/x
  3. Step 3: Cross multiply
    659,354.76x = 989,181.32 × 210,101.22
  4. Step 4: Simplify right side
    659,354.76x = 207,828,201,082.70
  5. Step 5: Solve for x
    x = 207,828,201,082.70/659,354.76
  6. Step 6: Final answer
    x = 315,199.36

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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.