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Finding the Fourth Proportional to 290,267.62, 435,417.63 and 90,615.58

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Solution

The fourth proportional to 290,267.62, 435,417.63 and 90,615.58 is: 135,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,267.62 : 435,417.63 = 90,615.58 : x
  2. Step 2: Convert to fraction form
    290,267.62/435,417.63 = 90,615.58/x
  3. Step 3: Cross multiply
    290,267.62x = 435,417.63 × 90,615.58
  4. Step 4: Simplify right side
    290,267.62x = 39,455,621,084.68
  5. Step 5: Solve for x
    x = 39,455,621,084.68/290,267.62
  6. Step 6: Final answer
    x = 135,928.43

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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.