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Finding the Fourth Proportional to 279,817.00, 386,136.19 and 152,489.86

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Solution

The fourth proportional to 279,817.00, 386,136.19 and 152,489.86 is: 210,429.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,817.00 : 386,136.19 = 152,489.86 : x
  2. Step 2: Convert to fraction form
    279,817.00/386,136.19 = 152,489.86/x
  3. Step 3: Cross multiply
    279,817.00x = 386,136.19 × 152,489.86
  4. Step 4: Simplify right side
    279,817.00x = 58,881,852,779.31
  5. Step 5: Solve for x
    x = 58,881,852,779.31/279,817.00
  6. Step 6: Final answer
    x = 210,429.86

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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.