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Finding the Fourth Proportional to 290,172.74, 399,779.67 and 224,535.87

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Solution

The fourth proportional to 290,172.74, 399,779.67 and 224,535.87 is: 309,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,172.74 : 399,779.67 = 224,535.87 : x
  2. Step 2: Convert to fraction form
    290,172.74/399,779.67 = 224,535.87/x
  3. Step 3: Cross multiply
    290,172.74x = 399,779.67 × 224,535.87
  4. Step 4: Simplify right side
    290,172.74x = 89,764,877,188.77
  5. Step 5: Solve for x
    x = 89,764,877,188.77/290,172.74
  6. Step 6: Final answer
    x = 309,349.80

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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.