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Finding the Fourth Proportional to 278,291.55, 384,043.08 and 150,967.15

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Solution

The fourth proportional to 278,291.55, 384,043.08 and 150,967.15 is: 208,335.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,291.55 : 384,043.08 = 150,967.15 : x
  2. Step 2: Convert to fraction form
    278,291.55/384,043.08 = 150,967.15/x
  3. Step 3: Cross multiply
    278,291.55x = 384,043.08 × 150,967.15
  4. Step 4: Simplify right side
    278,291.55x = 57,977,889,264.82
  5. Step 5: Solve for x
    x = 57,977,889,264.82/278,291.55
  6. Step 6: Final answer
    x = 208,335.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.