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Finding the Fourth Proportional to 190,873.80, 286,310.70 and 146,723.40

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Solution

The fourth proportional to 190,873.80, 286,310.70 and 146,723.40 is: 220,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,873.80 : 286,310.70 = 146,723.40 : x
  2. Step 2: Convert to fraction form
    190,873.80/286,310.70 = 146,723.40/x
  3. Step 3: Cross multiply
    190,873.80x = 286,310.70 × 146,723.40
  4. Step 4: Simplify right side
    190,873.80x = 42,008,479,360.38
  5. Step 5: Solve for x
    x = 42,008,479,360.38/190,873.80
  6. Step 6: Final answer
    x = 220,085.10

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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.