Home / 220,265.95-303,898.75-123,456.40

Finding the Fourth Proportional to 220,265.95, 303,898.75 and 123,456.40

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Solution

The fourth proportional to 220,265.95, 303,898.75 and 123,456.40 is: 170,331.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,265.95 : 303,898.75 = 123,456.40 : x
  2. Step 2: Convert to fraction form
    220,265.95/303,898.75 = 123,456.40/x
  3. Step 3: Cross multiply
    220,265.95x = 303,898.75 × 123,456.40
  4. Step 4: Simplify right side
    220,265.95x = 37,518,245,639.50
  5. Step 5: Solve for x
    x = 37,518,245,639.50/220,265.95
  6. Step 6: Final answer
    x = 170,331.57

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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.