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Finding the Fourth Proportional to 367,728.40, 551,657.40 and 131,208.40

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Solution

The fourth proportional to 367,728.40, 551,657.40 and 131,208.40 is: 196,835.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,728.40 : 551,657.40 = 131,208.40 : x
  2. Step 2: Convert to fraction form
    367,728.40/551,657.40 = 131,208.40/x
  3. Step 3: Cross multiply
    367,728.40x = 551,657.40 × 131,208.40
  4. Step 4: Simplify right side
    367,728.40x = 72,382,084,802.16
  5. Step 5: Solve for x
    x = 72,382,084,802.16/367,728.40
  6. Step 6: Final answer
    x = 196,835.72

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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.