Home / 285,944.58-428,919.96-86,266.71

Finding the Fourth Proportional to 285,944.58, 428,919.96 and 86,266.71

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Solution

The fourth proportional to 285,944.58, 428,919.96 and 86,266.71 is: 129,401.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,944.58 : 428,919.96 = 86,266.71 : x
  2. Step 2: Convert to fraction form
    285,944.58/428,919.96 = 86,266.71/x
  3. Step 3: Cross multiply
    285,944.58x = 428,919.96 × 86,266.71
  4. Step 4: Simplify right side
    285,944.58x = 37,001,513,802.53
  5. Step 5: Solve for x
    x = 37,001,513,802.53/285,944.58
  6. Step 6: Final answer
    x = 129,401.00

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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.