Home / 389,618.81-585,315.08-281,880.57

Finding the Fourth Proportional to 389,618.81, 585,315.08 and 281,880.57

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Solution

The fourth proportional to 389,618.81, 585,315.08 and 281,880.57 is: 423,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,618.81 : 585,315.08 = 281,880.57 : x
  2. Step 2: Convert to fraction form
    389,618.81/585,315.08 = 281,880.57/x
  3. Step 3: Cross multiply
    389,618.81x = 585,315.08 × 281,880.57
  4. Step 4: Simplify right side
    389,618.81x = 164,988,950,222.58
  5. Step 5: Solve for x
    x = 164,988,950,222.58/389,618.81
  6. Step 6: Final answer
    x = 423,462.49

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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.