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Finding the Fourth Proportional to 291,227.40, 436,840.80 and 91,565.24

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Solution

The fourth proportional to 291,227.40, 436,840.80 and 91,565.24 is: 137,347.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,227.40 : 436,840.80 = 91,565.24 : x
  2. Step 2: Convert to fraction form
    291,227.40/436,840.80 = 91,565.24/x
  3. Step 3: Cross multiply
    291,227.40x = 436,840.80 × 91,565.24
  4. Step 4: Simplify right side
    291,227.40x = 39,999,430,166.22
  5. Step 5: Solve for x
    x = 39,999,430,166.22/291,227.40
  6. Step 6: Final answer
    x = 137,347.76

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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.