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Finding the Fourth Proportional to 291,455.52, 437,200.80 and 91,782.40

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Solution

The fourth proportional to 291,455.52, 437,200.80 and 91,782.40 is: 137,679.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,455.52 : 437,200.80 = 91,782.40 : x
  2. Step 2: Convert to fraction form
    291,455.52/437,200.80 = 91,782.40/x
  3. Step 3: Cross multiply
    291,455.52x = 437,200.80 × 91,782.40
  4. Step 4: Simplify right side
    291,455.52x = 40,127,338,705.92
  5. Step 5: Solve for x
    x = 40,127,338,705.92/291,455.52
  6. Step 6: Final answer
    x = 137,679.12

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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.