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Finding the Fourth Proportional to 291,840.40, 437,420.40 and 134,084.80

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Solution

The fourth proportional to 291,840.40, 437,420.40 and 134,084.80 is: 200,970.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,840.40 : 437,420.40 = 134,084.80 : x
  2. Step 2: Convert to fraction form
    291,840.40/437,420.40 = 134,084.80/x
  3. Step 3: Cross multiply
    291,840.40x = 437,420.40 × 134,084.80
  4. Step 4: Simplify right side
    291,840.40x = 58,651,426,849.92
  5. Step 5: Solve for x
    x = 58,651,426,849.92/291,840.40
  6. Step 6: Final answer
    x = 200,970.90

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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.