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Finding the Fourth Proportional to 326,795.40, 490,095.90 and 127,000.80

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Solution

The fourth proportional to 326,795.40, 490,095.90 and 127,000.80 is: 190,463.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,795.40 : 490,095.90 = 127,000.80 : x
  2. Step 2: Convert to fraction form
    326,795.40/490,095.90 = 127,000.80/x
  3. Step 3: Cross multiply
    326,795.40x = 490,095.90 × 127,000.80
  4. Step 4: Simplify right side
    326,795.40x = 62,242,571,376.72
  5. Step 5: Solve for x
    x = 62,242,571,376.72/326,795.40
  6. Step 6: Final answer
    x = 190,463.43

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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.