Home / 310,299.11-465,439.35-85,673.25

Finding the Fourth Proportional to 310,299.11, 465,439.35 and 85,673.25

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Solution

The fourth proportional to 310,299.11, 465,439.35 and 85,673.25 is: 128,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,299.11 : 465,439.35 = 85,673.25 : x
  2. Step 2: Convert to fraction form
    310,299.11/465,439.35 = 85,673.25/x
  3. Step 3: Cross multiply
    310,299.11x = 465,439.35 × 85,673.25
  4. Step 4: Simplify right side
    310,299.11x = 39,875,701,792.39
  5. Step 5: Solve for x
    x = 39,875,701,792.39/310,299.11
  6. Step 6: Final answer
    x = 128,507.30

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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.