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Finding the Fourth Proportional to 260,455.92, 390,159.72 and 197,383.92

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Solution

The fourth proportional to 260,455.92, 390,159.72 and 197,383.92 is: 295,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,455.92 : 390,159.72 = 197,383.92 : x
  2. Step 2: Convert to fraction form
    260,455.92/390,159.72 = 197,383.92/x
  3. Step 3: Cross multiply
    260,455.92x = 390,159.72 × 197,383.92
  4. Step 4: Simplify right side
    260,455.92x = 77,011,254,959.70
  5. Step 5: Solve for x
    x = 77,011,254,959.70/260,455.92
  6. Step 6: Final answer
    x = 295,678.65

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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.