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Finding the Fourth Proportional to 291,335.76, 437,003.64 and 104,478.48

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Solution

The fourth proportional to 291,335.76, 437,003.64 and 104,478.48 is: 156,717.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,335.76 : 437,003.64 = 104,478.48 : x
  2. Step 2: Convert to fraction form
    291,335.76/437,003.64 = 104,478.48/x
  3. Step 3: Cross multiply
    291,335.76x = 437,003.64 × 104,478.48
  4. Step 4: Simplify right side
    291,335.76x = 45,657,476,061.67
  5. Step 5: Solve for x
    x = 45,657,476,061.67/291,335.76
  6. Step 6: Final answer
    x = 156,717.72

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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.