Home / 309,528.03-427,139.82-188,625.18

Finding the Fourth Proportional to 309,528.03, 427,139.82 and 188,625.18

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Solution

The fourth proportional to 309,528.03, 427,139.82 and 188,625.18 is: 260,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,528.03 : 427,139.82 = 188,625.18 : x
  2. Step 2: Convert to fraction form
    309,528.03/427,139.82 = 188,625.18/x
  3. Step 3: Cross multiply
    309,528.03x = 427,139.82 × 188,625.18
  4. Step 4: Simplify right side
    309,528.03x = 80,569,325,432.67
  5. Step 5: Solve for x
    x = 80,569,325,432.67/309,528.03
  6. Step 6: Final answer
    x = 260,297.35

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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.