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Finding the Fourth Proportional to 290,241.08, 435,389.10 and 112,761.78

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Solution

The fourth proportional to 290,241.08, 435,389.10 and 112,761.78 is: 169,153.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,241.08 : 435,389.10 = 112,761.78 : x
  2. Step 2: Convert to fraction form
    290,241.08/435,389.10 = 112,761.78/x
  3. Step 3: Cross multiply
    290,241.08x = 435,389.10 × 112,761.78
  4. Step 4: Simplify right side
    290,241.08x = 49,095,249,908.60
  5. Step 5: Solve for x
    x = 49,095,249,908.60/290,241.08
  6. Step 6: Final answer
    x = 169,153.35

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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.