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Finding the Fourth Proportional to 200,903.40, 301,700.70 and 142,151.40

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Solution

The fourth proportional to 200,903.40, 301,700.70 and 142,151.40 is: 213,471.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,903.40 : 301,700.70 = 142,151.40 : x
  2. Step 2: Convert to fraction form
    200,903.40/301,700.70 = 142,151.40/x
  3. Step 3: Cross multiply
    200,903.40x = 301,700.70 × 142,151.40
  4. Step 4: Simplify right side
    200,903.40x = 42,887,176,885.98
  5. Step 5: Solve for x
    x = 42,887,176,885.98/200,903.40
  6. Step 6: Final answer
    x = 213,471.63

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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.