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Finding the Fourth Proportional to 290,955.70, 401,458.68 and 170,073.57

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Solution

The fourth proportional to 290,955.70, 401,458.68 and 170,073.57 is: 234,666.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,955.70 : 401,458.68 = 170,073.57 : x
  2. Step 2: Convert to fraction form
    290,955.70/401,458.68 = 170,073.57/x
  3. Step 3: Cross multiply
    290,955.70x = 401,458.68 × 170,073.57
  4. Step 4: Simplify right side
    290,955.70x = 68,277,512,420.56
  5. Step 5: Solve for x
    x = 68,277,512,420.56/290,955.70
  6. Step 6: Final answer
    x = 234,666.35

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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.