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Finding the Fourth Proportional to 290,319.18, 435,309.27 and 112,618.54

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Solution

The fourth proportional to 290,319.18, 435,309.27 and 112,618.54 is: 168,862.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,319.18 : 435,309.27 = 112,618.54 : x
  2. Step 2: Convert to fraction form
    290,319.18/435,309.27 = 112,618.54/x
  3. Step 3: Cross multiply
    290,319.18x = 435,309.27 × 112,618.54
  4. Step 4: Simplify right side
    290,319.18x = 49,023,894,435.87
  5. Step 5: Solve for x
    x = 49,023,894,435.87/290,319.18
  6. Step 6: Final answer
    x = 168,862.06

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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.