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Finding the Fourth Proportional to 201,618.70, 302,428.05 and 198,508.30

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Solution

The fourth proportional to 201,618.70, 302,428.05 and 198,508.30 is: 297,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,618.70 : 302,428.05 = 198,508.30 : x
  2. Step 2: Convert to fraction form
    201,618.70/302,428.05 = 198,508.30/x
  3. Step 3: Cross multiply
    201,618.70x = 302,428.05 × 198,508.30
  4. Step 4: Simplify right side
    201,618.70x = 60,034,478,077.82
  5. Step 5: Solve for x
    x = 60,034,478,077.82/201,618.70
  6. Step 6: Final answer
    x = 297,762.45

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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.