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Finding the Fourth Proportional to 283,136.43, 390,737.43 and 162,300.59

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Solution

The fourth proportional to 283,136.43, 390,737.43 and 162,300.59 is: 223,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,136.43 : 390,737.43 = 162,300.59 : x
  2. Step 2: Convert to fraction form
    283,136.43/390,737.43 = 162,300.59/x
  3. Step 3: Cross multiply
    283,136.43x = 390,737.43 × 162,300.59
  4. Step 4: Simplify right side
    283,136.43x = 63,416,913,470.40
  5. Step 5: Solve for x
    x = 63,416,913,470.40/283,136.43
  6. Step 6: Final answer
    x = 223,980.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.