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Finding the Fourth Proportional to 437,623.70, 656,435.55 and 260,039.30

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Solution

The fourth proportional to 437,623.70, 656,435.55 and 260,039.30 is: 390,058.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,623.70 : 656,435.55 = 260,039.30 : x
  2. Step 2: Convert to fraction form
    437,623.70/656,435.55 = 260,039.30/x
  3. Step 3: Cross multiply
    437,623.70x = 656,435.55 × 260,039.30
  4. Step 4: Simplify right side
    437,623.70x = 170,699,040,917.12
  5. Step 5: Solve for x
    x = 170,699,040,917.12/437,623.70
  6. Step 6: Final answer
    x = 390,058.95

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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.