Home / 217,948.45-300,769.13-122,455.09

Finding the Fourth Proportional to 217,948.45, 300,769.13 and 122,455.09

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Solution

The fourth proportional to 217,948.45, 300,769.13 and 122,455.09 is: 168,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,948.45 : 300,769.13 = 122,455.09 : x
  2. Step 2: Convert to fraction form
    217,948.45/300,769.13 = 122,455.09/x
  3. Step 3: Cross multiply
    217,948.45x = 300,769.13 × 122,455.09
  4. Step 4: Simplify right side
    217,948.45x = 36,830,710,883.37
  5. Step 5: Solve for x
    x = 36,830,710,883.37/217,948.45
  6. Step 6: Final answer
    x = 168,988.18

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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.