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Finding the Fourth Proportional to 291,886.74, 436,865.40 and 265,657.32

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Solution

The fourth proportional to 291,886.74, 436,865.40 and 265,657.32 is: 397,607.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,886.74 : 436,865.40 = 265,657.32 : x
  2. Step 2: Convert to fraction form
    291,886.74/436,865.40 = 265,657.32/x
  3. Step 3: Cross multiply
    291,886.74x = 436,865.40 × 265,657.32
  4. Step 4: Simplify right side
    291,886.74x = 116,056,491,364.73
  5. Step 5: Solve for x
    x = 116,056,491,364.73/291,886.74
  6. Step 6: Final answer
    x = 397,607.96

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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.