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Finding the Fourth Proportional to 249,830.85, 374,616.68 and 91,978.05

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Solution

The fourth proportional to 249,830.85, 374,616.68 and 91,978.05 is: 137,919.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,830.85 : 374,616.68 = 91,978.05 : x
  2. Step 2: Convert to fraction form
    249,830.85/374,616.68 = 91,978.05/x
  3. Step 3: Cross multiply
    249,830.85x = 374,616.68 × 91,978.05
  4. Step 4: Simplify right side
    249,830.85x = 34,456,511,263.98
  5. Step 5: Solve for x
    x = 34,456,511,263.98/249,830.85
  6. Step 6: Final answer
    x = 137,919.36

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1.5x scale

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.