Home / 219,918.40-303,455.12-123,117.22

Finding the Fourth Proportional to 219,918.40, 303,455.12 and 123,117.22

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Solution

The fourth proportional to 219,918.40, 303,455.12 and 123,117.22 is: 169,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,918.40 : 303,455.12 = 123,117.22 : x
  2. Step 2: Convert to fraction form
    219,918.40/303,455.12 = 123,117.22/x
  3. Step 3: Cross multiply
    219,918.40x = 303,455.12 × 123,117.22
  4. Step 4: Simplify right side
    219,918.40x = 37,360,550,769.17
  5. Step 5: Solve for x
    x = 37,360,550,769.17/219,918.40
  6. Step 6: Final answer
    x = 169,883.70

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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.