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Finding the Fourth Proportional to 200,929.40, 301,739.70 and 142,177.40

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Solution

The fourth proportional to 200,929.40, 301,739.70 and 142,177.40 is: 213,510.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,929.40 : 301,739.70 = 142,177.40 : x
  2. Step 2: Convert to fraction form
    200,929.40/301,739.70 = 142,177.40/x
  3. Step 3: Cross multiply
    200,929.40x = 301,739.70 × 142,177.40
  4. Step 4: Simplify right side
    200,929.40x = 42,900,566,022.78
  5. Step 5: Solve for x
    x = 42,900,566,022.78/200,929.40
  6. Step 6: Final answer
    x = 213,510.65

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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.