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Finding the Fourth Proportional to 245,800.34, 368,789.34 and 85,899.96

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Solution

The fourth proportional to 245,800.34, 368,789.34 and 85,899.96 is: 128,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,800.34 : 368,789.34 = 85,899.96 : x
  2. Step 2: Convert to fraction form
    245,800.34/368,789.34 = 85,899.96/x
  3. Step 3: Cross multiply
    245,800.34x = 368,789.34 × 85,899.96
  4. Step 4: Simplify right side
    245,800.34x = 31,678,989,554.43
  5. Step 5: Solve for x
    x = 31,678,989,554.43/245,800.34
  6. Step 6: Final answer
    x = 128,880.98

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1.5x scale

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.