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Finding the Fourth Proportional to 291,888, 437,889.60 and 92,237.76

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Solution

The fourth proportional to 291,888, 437,889.60 and 92,237.76 is: 138,374.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,888 : 437,889.60 = 92,237.76 : x
  2. Step 2: Convert to fraction form
    291,888/437,889.60 = 92,237.76/x
  3. Step 3: Cross multiply
    291,888x = 437,889.60 × 92,237.76
  4. Step 4: Simplify right side
    291,888x = 40,389,955,831.30
  5. Step 5: Solve for x
    x = 40,389,955,831.30/291,888
  6. Step 6: Final answer
    x = 138,374.84

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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.