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Finding the Fourth Proportional to 191,803.40, 287,851.98 and 135,522.44

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Solution

The fourth proportional to 191,803.40, 287,851.98 and 135,522.44 is: 203,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,803.40 : 287,851.98 = 135,522.44 : x
  2. Step 2: Convert to fraction form
    191,803.40/287,851.98 = 135,522.44/x
  3. Step 3: Cross multiply
    191,803.40x = 287,851.98 × 135,522.44
  4. Step 4: Simplify right side
    191,803.40x = 39,010,402,688.43
  5. Step 5: Solve for x
    x = 39,010,402,688.43/191,803.40
  6. Step 6: Final answer
    x = 203,387.44

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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.