Home / 219,839.55-329,528.48-139,938.72

Finding the Fourth Proportional to 219,839.55, 329,528.48 and 139,938.72

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Solution

The fourth proportional to 219,839.55, 329,528.48 and 139,938.72 is: 209,761.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,839.55 : 329,528.48 = 139,938.72 : x
  2. Step 2: Convert to fraction form
    219,839.55/329,528.48 = 139,938.72/x
  3. Step 3: Cross multiply
    219,839.55x = 329,528.48 × 139,938.72
  4. Step 4: Simplify right side
    219,839.55x = 46,113,792,995.05
  5. Step 5: Solve for x
    x = 46,113,792,995.05/219,839.55
  6. Step 6: Final answer
    x = 209,761.13

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1.5x scale

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.