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Finding the Fourth Proportional to 338,354.71, 507,492.55 and 135,942.62

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Solution

The fourth proportional to 338,354.71, 507,492.55 and 135,942.62 is: 203,898.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,354.71 : 507,492.55 = 135,942.62 : x
  2. Step 2: Convert to fraction form
    338,354.71/507,492.55 = 135,942.62/x
  3. Step 3: Cross multiply
    338,354.71x = 507,492.55 × 135,942.62
  4. Step 4: Simplify right side
    338,354.71x = 68,989,866,877.48
  5. Step 5: Solve for x
    x = 68,989,866,877.48/338,354.71
  6. Step 6: Final answer
    x = 203,898.05

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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.