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Finding the Fourth Proportional to 290,455.40, 435,837.90 and 112,968.20

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Solution

The fourth proportional to 290,455.40, 435,837.90 and 112,968.20 is: 169,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,455.40 : 435,837.90 = 112,968.20 : x
  2. Step 2: Convert to fraction form
    290,455.40/435,837.90 = 112,968.20/x
  3. Step 3: Cross multiply
    290,455.40x = 435,837.90 × 112,968.20
  4. Step 4: Simplify right side
    290,455.40x = 49,235,823,054.78
  5. Step 5: Solve for x
    x = 49,235,823,054.78/290,455.40
  6. Step 6: Final answer
    x = 169,512.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.