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Finding the Fourth Proportional to 200,005.70, 300,008.55 and 189,119.30

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Solution

The fourth proportional to 200,005.70, 300,008.55 and 189,119.30 is: 283,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,005.70 : 300,008.55 = 189,119.30 : x
  2. Step 2: Convert to fraction form
    200,005.70/300,008.55 = 189,119.30/x
  3. Step 3: Cross multiply
    200,005.70x = 300,008.55 × 189,119.30
  4. Step 4: Simplify right side
    200,005.70x = 56,737,406,970.02
  5. Step 5: Solve for x
    x = 56,737,406,970.02/200,005.70
  6. Step 6: Final answer
    x = 283,678.95

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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.