Home / 189,476.20-284,444.70-142,359.40

Finding the Fourth Proportional to 189,476.20, 284,444.70 and 142,359.40

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Solution

The fourth proportional to 189,476.20, 284,444.70 and 142,359.40 is: 213,712.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,476.20 : 284,444.70 = 142,359.40 : x
  2. Step 2: Convert to fraction form
    189,476.20/284,444.70 = 142,359.40/x
  3. Step 3: Cross multiply
    189,476.20x = 284,444.70 × 142,359.40
  4. Step 4: Simplify right side
    189,476.20x = 40,493,376,825.18
  5. Step 5: Solve for x
    x = 40,493,376,825.18/189,476.20
  6. Step 6: Final answer
    x = 213,712.21

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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.