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Finding the Fourth Proportional to 371,998.70, 557,954.85 and 105,800.30

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Solution

The fourth proportional to 371,998.70, 557,954.85 and 105,800.30 is: 158,688.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,998.70 : 557,954.85 = 105,800.30 : x
  2. Step 2: Convert to fraction form
    371,998.70/557,954.85 = 105,800.30/x
  3. Step 3: Cross multiply
    371,998.70x = 557,954.85 × 105,800.30
  4. Step 4: Simplify right side
    371,998.70x = 59,031,790,516.46
  5. Step 5: Solve for x
    x = 59,031,790,516.46/371,998.70
  6. Step 6: Final answer
    x = 158,688.16

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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.