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Finding the Fourth Proportional to 200,030.30, 300,045.45 and 66,866.30

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Solution

The fourth proportional to 200,030.30, 300,045.45 and 66,866.30 is: 100,299.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,030.30 : 300,045.45 = 66,866.30 : x
  2. Step 2: Convert to fraction form
    200,030.30/300,045.45 = 66,866.30/x
  3. Step 3: Cross multiply
    200,030.30x = 300,045.45 × 66,866.30
  4. Step 4: Simplify right side
    200,030.30x = 20,062,929,073.34
  5. Step 5: Solve for x
    x = 20,062,929,073.34/200,030.30
  6. Step 6: Final answer
    x = 100,299.45

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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.