Home / 283,143.72-390,754.40-162,305.09

Finding the Fourth Proportional to 283,143.72, 390,754.40 and 162,305.09

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Solution

The fourth proportional to 283,143.72, 390,754.40 and 162,305.09 is: 223,990.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,143.72 : 390,754.40 = 162,305.09 : x
  2. Step 2: Convert to fraction form
    283,143.72/390,754.40 = 162,305.09/x
  3. Step 3: Cross multiply
    283,143.72x = 390,754.40 × 162,305.09
  4. Step 4: Simplify right side
    283,143.72x = 63,421,425,294.60
  5. Step 5: Solve for x
    x = 63,421,425,294.60/283,143.72
  6. Step 6: Final answer
    x = 223,990.22

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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.