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Finding the Fourth Proportional to 291,858.81, 437,801.45 and 89,440.35

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Solution

The fourth proportional to 291,858.81, 437,801.45 and 89,440.35 is: 134,164.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,858.81 : 437,801.45 = 89,440.35 : x
  2. Step 2: Convert to fraction form
    291,858.81/437,801.45 = 89,440.35/x
  3. Step 3: Cross multiply
    291,858.81x = 437,801.45 × 89,440.35
  4. Step 4: Simplify right side
    291,858.81x = 39,157,114,471.31
  5. Step 5: Solve for x
    x = 39,157,114,471.31/291,858.81
  6. Step 6: Final answer
    x = 134,164.58

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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.