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Finding the Fourth Proportional to 319,674.40, 479,900.40 and 240,164.80

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Solution

The fourth proportional to 319,674.40, 479,900.40 and 240,164.80 is: 360,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,674.40 : 479,900.40 = 240,164.80 : x
  2. Step 2: Convert to fraction form
    319,674.40/479,900.40 = 240,164.80/x
  3. Step 3: Cross multiply
    319,674.40x = 479,900.40 × 240,164.80
  4. Step 4: Simplify right side
    319,674.40x = 115,255,183,585.92
  5. Step 5: Solve for x
    x = 115,255,183,585.92/319,674.40
  6. Step 6: Final answer
    x = 360,539.30

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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.