Home / 219,730.64-303,117-139,022.24

Finding the Fourth Proportional to 219,730.64, 303,117 and 139,022.24

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Solution

The fourth proportional to 219,730.64, 303,117 and 139,022.24 is: 191,780.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,730.64 : 303,117 = 139,022.24 : x
  2. Step 2: Convert to fraction form
    219,730.64/303,117 = 139,022.24/x
  3. Step 3: Cross multiply
    219,730.64x = 303,117 × 139,022.24
  4. Step 4: Simplify right side
    219,730.64x = 42,140,004,322.08
  5. Step 5: Solve for x
    x = 42,140,004,322.08/219,730.64
  6. Step 6: Final answer
    x = 191,780.28

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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.