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Finding the Fourth Proportional to 220,419.86, 304,126.18 and 139,818.11

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Solution

The fourth proportional to 220,419.86, 304,126.18 and 139,818.11 is: 192,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,419.86 : 304,126.18 = 139,818.11 : x
  2. Step 2: Convert to fraction form
    220,419.86/304,126.18 = 139,818.11/x
  3. Step 3: Cross multiply
    220,419.86x = 304,126.18 × 139,818.11
  4. Step 4: Simplify right side
    220,419.86x = 42,522,345,818.94
  5. Step 5: Solve for x
    x = 42,522,345,818.94/220,419.86
  6. Step 6: Final answer
    x = 192,915.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.