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Finding the Fourth Proportional to 891,831.02, 1,337,741.60 and 217,916.06

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Solution

The fourth proportional to 891,831.02, 1,337,741.60 and 217,916.06 is: 326,872.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,831.02 : 1,337,741.60 = 217,916.06 : x
  2. Step 2: Convert to fraction form
    891,831.02/1,337,741.60 = 217,916.06/x
  3. Step 3: Cross multiply
    891,831.02x = 1,337,741.60 × 217,916.06
  4. Step 4: Simplify right side
    891,831.02x = 291,515,378,770.10
  5. Step 5: Solve for x
    x = 291,515,378,770.10/891,831.02
  6. Step 6: Final answer
    x = 326,872.89

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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.