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Finding the Fourth Proportional to 302,020.20, 453,030.30 and 91,657.80

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Solution

The fourth proportional to 302,020.20, 453,030.30 and 91,657.80 is: 137,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,020.20 : 453,030.30 = 91,657.80 : x
  2. Step 2: Convert to fraction form
    302,020.20/453,030.30 = 91,657.80/x
  3. Step 3: Cross multiply
    302,020.20x = 453,030.30 × 91,657.80
  4. Step 4: Simplify right side
    302,020.20x = 41,523,760,631.34
  5. Step 5: Solve for x
    x = 41,523,760,631.34/302,020.20
  6. Step 6: Final answer
    x = 137,486.70

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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.