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Finding the Fourth Proportional to 290,172.62, 399,779.51 and 224,535.76

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Solution

The fourth proportional to 290,172.62, 399,779.51 and 224,535.76 is: 309,349.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,172.62 : 399,779.51 = 224,535.76 : x
  2. Step 2: Convert to fraction form
    290,172.62/399,779.51 = 224,535.76/x
  3. Step 3: Cross multiply
    290,172.62x = 399,779.51 × 224,535.76
  4. Step 4: Simplify right side
    290,172.62x = 89,764,792,988.70
  5. Step 5: Solve for x
    x = 89,764,792,988.70/290,172.62
  6. Step 6: Final answer
    x = 309,349.63

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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.