Home / 219,730.14-303,116.31-139,021.74

Finding the Fourth Proportional to 219,730.14, 303,116.31 and 139,021.74

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Solution

The fourth proportional to 219,730.14, 303,116.31 and 139,021.74 is: 191,779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,730.14 : 303,116.31 = 139,021.74 : x
  2. Step 2: Convert to fraction form
    219,730.14/303,116.31 = 139,021.74/x
  3. Step 3: Cross multiply
    219,730.14x = 303,116.31 × 139,021.74
  4. Step 4: Simplify right side
    219,730.14x = 42,139,756,838.58
  5. Step 5: Solve for x
    x = 42,139,756,838.58/219,730.14
  6. Step 6: Final answer
    x = 191,779.59

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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.