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Finding the Fourth Proportional to 404,899.20, 607,521.60 and 194,428.80

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Solution

The fourth proportional to 404,899.20, 607,521.60 and 194,428.80 is: 291,726.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,899.20 : 607,521.60 = 194,428.80 : x
  2. Step 2: Convert to fraction form
    404,899.20/607,521.60 = 194,428.80/x
  3. Step 3: Cross multiply
    404,899.20x = 607,521.60 × 194,428.80
  4. Step 4: Simplify right side
    404,899.20x = 118,119,695,662.08
  5. Step 5: Solve for x
    x = 118,119,695,662.08/404,899.20
  6. Step 6: Final answer
    x = 291,726.18

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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.