Home / 219,633.12-302,933.52-139,073.76

Finding the Fourth Proportional to 219,633.12, 302,933.52 and 139,073.76

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Solution

The fourth proportional to 219,633.12, 302,933.52 and 139,073.76 is: 191,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,633.12 : 302,933.52 = 139,073.76 : x
  2. Step 2: Convert to fraction form
    219,633.12/302,933.52 = 139,073.76/x
  3. Step 3: Cross multiply
    219,633.12x = 302,933.52 × 139,073.76
  4. Step 4: Simplify right side
    219,633.12x = 42,130,103,656.44
  5. Step 5: Solve for x
    x = 42,130,103,656.44/219,633.12
  6. Step 6: Final answer
    x = 191,820.36

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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.