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Finding the Fourth Proportional to 348,520.90, 521,398.95 and 302,287.30

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Solution

The fourth proportional to 348,520.90, 521,398.95 and 302,287.30 is: 452,231.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,520.90 : 521,398.95 = 302,287.30 : x
  2. Step 2: Convert to fraction form
    348,520.90/521,398.95 = 302,287.30/x
  3. Step 3: Cross multiply
    348,520.90x = 521,398.95 × 302,287.30
  4. Step 4: Simplify right side
    348,520.90x = 157,612,280,818.34
  5. Step 5: Solve for x
    x = 157,612,280,818.34/348,520.90
  6. Step 6: Final answer
    x = 452,231.93

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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.