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Finding the Fourth Proportional to 202,139.90, 303,209.85 and 185,810.30

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Solution

The fourth proportional to 202,139.90, 303,209.85 and 185,810.30 is: 278,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,139.90 : 303,209.85 = 185,810.30 : x
  2. Step 2: Convert to fraction form
    202,139.90/303,209.85 = 185,810.30/x
  3. Step 3: Cross multiply
    202,139.90x = 303,209.85 × 185,810.30
  4. Step 4: Simplify right side
    202,139.90x = 56,339,513,191.46
  5. Step 5: Solve for x
    x = 56,339,513,191.46/202,139.90
  6. Step 6: Final answer
    x = 278,715.45

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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.