Home / 219,647.56-303,031.38-129,006.40

Finding the Fourth Proportional to 219,647.56, 303,031.38 and 129,006.40

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Solution

The fourth proportional to 219,647.56, 303,031.38 and 129,006.40 is: 177,980.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,647.56 : 303,031.38 = 129,006.40 : x
  2. Step 2: Convert to fraction form
    219,647.56/303,031.38 = 129,006.40/x
  3. Step 3: Cross multiply
    219,647.56x = 303,031.38 × 129,006.40
  4. Step 4: Simplify right side
    219,647.56x = 39,092,987,420.83
  5. Step 5: Solve for x
    x = 39,092,987,420.83/219,647.56
  6. Step 6: Final answer
    x = 177,980.52

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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.