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Finding the Fourth Proportional to 202,870.60, 304,305.90 and 102,992.20

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Solution

The fourth proportional to 202,870.60, 304,305.90 and 102,992.20 is: 154,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,870.60 : 304,305.90 = 102,992.20 : x
  2. Step 2: Convert to fraction form
    202,870.60/304,305.90 = 102,992.20/x
  3. Step 3: Cross multiply
    202,870.60x = 304,305.90 × 102,992.20
  4. Step 4: Simplify right side
    202,870.60x = 31,341,134,113.98
  5. Step 5: Solve for x
    x = 31,341,134,113.98/202,870.60
  6. Step 6: Final answer
    x = 154,488.30

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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.