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Finding the Fourth Proportional to 326,040.30, 489,060.45 and 282,300.30

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Solution

The fourth proportional to 326,040.30, 489,060.45 and 282,300.30 is: 423,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,040.30 : 489,060.45 = 282,300.30 : x
  2. Step 2: Convert to fraction form
    326,040.30/489,060.45 = 282,300.30/x
  3. Step 3: Cross multiply
    326,040.30x = 489,060.45 × 282,300.30
  4. Step 4: Simplify right side
    326,040.30x = 138,061,911,753.14
  5. Step 5: Solve for x
    x = 138,061,911,753.14/326,040.30
  6. Step 6: Final answer
    x = 423,450.45

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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.