Home / 189,426.20-284,369.70-142,309.40

Finding the Fourth Proportional to 189,426.20, 284,369.70 and 142,309.40

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Solution

The fourth proportional to 189,426.20, 284,369.70 and 142,309.40 is: 213,637.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,426.20 : 284,369.70 = 142,309.40 : x
  2. Step 2: Convert to fraction form
    189,426.20/284,369.70 = 142,309.40/x
  3. Step 3: Cross multiply
    189,426.20x = 284,369.70 × 142,309.40
  4. Step 4: Simplify right side
    189,426.20x = 40,468,481,385.18
  5. Step 5: Solve for x
    x = 40,468,481,385.18/189,426.20
  6. Step 6: Final answer
    x = 213,637.19

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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.