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Finding the Fourth Proportional to 290,325.80, 435,319.20 and 112,625.16

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Solution

The fourth proportional to 290,325.80, 435,319.20 and 112,625.16 is: 168,871.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,325.80 : 435,319.20 = 112,625.16 : x
  2. Step 2: Convert to fraction form
    290,325.80/435,319.20 = 112,625.16/x
  3. Step 3: Cross multiply
    290,325.80x = 435,319.20 × 112,625.16
  4. Step 4: Simplify right side
    290,325.80x = 49,027,894,551.07
  5. Step 5: Solve for x
    x = 49,027,894,551.07/290,325.80
  6. Step 6: Final answer
    x = 168,871.99

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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.