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Finding the Fourth Proportional to 291,478.78, 437,152.56 and 190,244.98

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Solution

The fourth proportional to 291,478.78, 437,152.56 and 190,244.98 is: 285,324.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,478.78 : 437,152.56 = 190,244.98 : x
  2. Step 2: Convert to fraction form
    291,478.78/437,152.56 = 190,244.98/x
  3. Step 3: Cross multiply
    291,478.78x = 437,152.56 × 190,244.98
  4. Step 4: Simplify right side
    291,478.78x = 83,166,080,034.15
  5. Step 5: Solve for x
    x = 83,166,080,034.15/291,478.78
  6. Step 6: Final answer
    x = 285,324.65

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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.