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Finding the Fourth Proportional to 326,110.30, 489,165.45 and 302,490.70

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Solution

The fourth proportional to 326,110.30, 489,165.45 and 302,490.70 is: 453,736.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,110.30 : 489,165.45 = 302,490.70 : x
  2. Step 2: Convert to fraction form
    326,110.30/489,165.45 = 302,490.70/x
  3. Step 3: Cross multiply
    326,110.30x = 489,165.45 × 302,490.70
  4. Step 4: Simplify right side
    326,110.30x = 147,967,999,386.32
  5. Step 5: Solve for x
    x = 147,967,999,386.32/326,110.30
  6. Step 6: Final answer
    x = 453,736.05

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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.