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Finding the Fourth Proportional to 238,503.90, 357,533.50 and 80,621.94

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Solution

The fourth proportional to 238,503.90, 357,533.50 and 80,621.94 is: 120,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,503.90 : 357,533.50 = 80,621.94 : x
  2. Step 2: Convert to fraction form
    238,503.90/357,533.50 = 80,621.94/x
  3. Step 3: Cross multiply
    238,503.90x = 357,533.50 × 80,621.94
  4. Step 4: Simplify right side
    238,503.90x = 28,825,044,384.99
  5. Step 5: Solve for x
    x = 28,825,044,384.99/238,503.90
  6. Step 6: Final answer
    x = 120,857.75

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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.