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Finding the Fourth Proportional to 291,277.40, 437,085.90 and 122,787.40

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Solution

The fourth proportional to 291,277.40, 437,085.90 and 122,787.40 is: 184,252.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,277.40 : 437,085.90 = 122,787.40 : x
  2. Step 2: Convert to fraction form
    291,277.40/437,085.90 = 122,787.40/x
  3. Step 3: Cross multiply
    291,277.40x = 437,085.90 × 122,787.40
  4. Step 4: Simplify right side
    291,277.40x = 53,668,641,237.66
  5. Step 5: Solve for x
    x = 53,668,641,237.66/291,277.40
  6. Step 6: Final answer
    x = 184,252.68

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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.