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Finding the Fourth Proportional to 290,488.80, 435,646.80 and 112,893.60

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Solution

The fourth proportional to 290,488.80, 435,646.80 and 112,893.60 is: 169,306.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,488.80 : 435,646.80 = 112,893.60 : x
  2. Step 2: Convert to fraction form
    290,488.80/435,646.80 = 112,893.60/x
  3. Step 3: Cross multiply
    290,488.80x = 435,646.80 × 112,893.60
  4. Step 4: Simplify right side
    290,488.80x = 49,181,735,580.48
  5. Step 5: Solve for x
    x = 49,181,735,580.48/290,488.80
  6. Step 6: Final answer
    x = 169,306.82

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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.