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Finding the Fourth Proportional to 290,279.21, 435,584.64 and 112,763.12

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Solution

The fourth proportional to 290,279.21, 435,584.64 and 112,763.12 is: 169,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,279.21 : 435,584.64 = 112,763.12 : x
  2. Step 2: Convert to fraction form
    290,279.21/435,584.64 = 112,763.12/x
  3. Step 3: Cross multiply
    290,279.21x = 435,584.64 × 112,763.12
  4. Step 4: Simplify right side
    290,279.21x = 49,117,883,030.48
  5. Step 5: Solve for x
    x = 49,117,883,030.48/290,279.21
  6. Step 6: Final answer
    x = 169,209.10

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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.