Home / 389,619.81-585,316.58-281,881.57

Finding the Fourth Proportional to 389,619.81, 585,316.58 and 281,881.57

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Solution

The fourth proportional to 389,619.81, 585,316.58 and 281,881.57 is: 423,463.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,619.81 : 585,316.58 = 281,881.57 : x
  2. Step 2: Convert to fraction form
    389,619.81/585,316.58 = 281,881.57/x
  3. Step 3: Cross multiply
    389,619.81x = 585,316.58 × 281,881.57
  4. Step 4: Simplify right side
    389,619.81x = 164,989,956,517.43
  5. Step 5: Solve for x
    x = 164,989,956,517.43/389,619.81
  6. Step 6: Final answer
    x = 423,463.98

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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.