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Finding the Fourth Proportional to 290,279.71, 435,585.39 and 112,763.62

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Solution

The fourth proportional to 290,279.71, 435,585.39 and 112,763.62 is: 169,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,279.71 : 435,585.39 = 112,763.62 : x
  2. Step 2: Convert to fraction form
    290,279.71/435,585.39 = 112,763.62/x
  3. Step 3: Cross multiply
    290,279.71x = 435,585.39 × 112,763.62
  4. Step 4: Simplify right side
    290,279.71x = 49,118,185,395.51
  5. Step 5: Solve for x
    x = 49,118,185,395.51/290,279.71
  6. Step 6: Final answer
    x = 169,209.85

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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.