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Finding the Fourth Proportional to 309,898.44, 427,801.50 and 238,253.40

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Solution

The fourth proportional to 309,898.44, 427,801.50 and 238,253.40 is: 328,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,898.44 : 427,801.50 = 238,253.40 : x
  2. Step 2: Convert to fraction form
    309,898.44/427,801.50 = 238,253.40/x
  3. Step 3: Cross multiply
    309,898.44x = 427,801.50 × 238,253.40
  4. Step 4: Simplify right side
    309,898.44x = 101,925,161,900.10
  5. Step 5: Solve for x
    x = 101,925,161,900.10/309,898.44
  6. Step 6: Final answer
    x = 328,898.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.