Home / 278,119.77-383,813.37-157,258.42

Finding the Fourth Proportional to 278,119.77, 383,813.37 and 157,258.42

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Solution

The fourth proportional to 278,119.77, 383,813.37 and 157,258.42 is: 217,021.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,119.77 : 383,813.37 = 157,258.42 : x
  2. Step 2: Convert to fraction form
    278,119.77/383,813.37 = 157,258.42/x
  3. Step 3: Cross multiply
    278,119.77x = 383,813.37 × 157,258.42
  4. Step 4: Simplify right side
    278,119.77x = 60,357,884,141.08
  5. Step 5: Solve for x
    x = 60,357,884,141.08/278,119.77
  6. Step 6: Final answer
    x = 217,021.19

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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.