Home / 391,422.03-540,268.70-230,328.87

Finding the Fourth Proportional to 391,422.03, 540,268.70 and 230,328.87

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Solution

The fourth proportional to 391,422.03, 540,268.70 and 230,328.87 is: 317,916.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,422.03 : 540,268.70 = 230,328.87 : x
  2. Step 2: Convert to fraction form
    391,422.03/540,268.70 = 230,328.87/x
  3. Step 3: Cross multiply
    391,422.03x = 540,268.70 × 230,328.87
  4. Step 4: Simplify right side
    391,422.03x = 124,439,478,015.73
  5. Step 5: Solve for x
    x = 124,439,478,015.73/391,422.03
  6. Step 6: Final answer
    x = 317,916.39

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1.5x scale

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.