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Finding the Fourth Proportional to 290,925.87, 435,455.37 and 155,651.54

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Solution

The fourth proportional to 290,925.87, 435,455.37 and 155,651.54 is: 232,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,925.87 : 435,455.37 = 155,651.54 : x
  2. Step 2: Convert to fraction form
    290,925.87/435,455.37 = 155,651.54/x
  3. Step 3: Cross multiply
    290,925.87x = 435,455.37 × 155,651.54
  4. Step 4: Simplify right side
    290,925.87x = 67,779,296,764.49
  5. Step 5: Solve for x
    x = 67,779,296,764.49/290,925.87
  6. Step 6: Final answer
    x = 232,977.89

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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.