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Finding the Fourth Proportional to 286,922, 430,452.12 and 89,930

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Solution

The fourth proportional to 286,922, 430,452.12 and 89,930 is: 134,916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,922 : 430,452.12 = 89,930 : x
  2. Step 2: Convert to fraction form
    286,922/430,452.12 = 89,930/x
  3. Step 3: Cross multiply
    286,922x = 430,452.12 × 89,930
  4. Step 4: Simplify right side
    286,922x = 38,710,559,151.60
  5. Step 5: Solve for x
    x = 38,710,559,151.60/286,922
  6. Step 6: Final answer
    x = 134,916.66

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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.