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Finding the Fourth Proportional to 371,291.25, 556,947.81 and 90,808.50

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Solution

The fourth proportional to 371,291.25, 556,947.81 and 90,808.50 is: 136,215.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,291.25 : 556,947.81 = 90,808.50 : x
  2. Step 2: Convert to fraction form
    371,291.25/556,947.81 = 90,808.50/x
  3. Step 3: Cross multiply
    371,291.25x = 556,947.81 × 90,808.50
  4. Step 4: Simplify right side
    371,291.25x = 50,575,595,204.39
  5. Step 5: Solve for x
    x = 50,575,595,204.39/371,291.25
  6. Step 6: Final answer
    x = 136,215.42

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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.