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Finding the Fourth Proportional to 291,465.60, 437,148 and 81,104.64

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Solution

The fourth proportional to 291,465.60, 437,148 and 81,104.64 is: 121,642.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,465.60 : 437,148 = 81,104.64 : x
  2. Step 2: Convert to fraction form
    291,465.60/437,148 = 81,104.64/x
  3. Step 3: Cross multiply
    291,465.60x = 437,148 × 81,104.64
  4. Step 4: Simplify right side
    291,465.60x = 35,454,731,166.72
  5. Step 5: Solve for x
    x = 35,454,731,166.72/291,465.60
  6. Step 6: Final answer
    x = 121,642.94

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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.