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Finding the Fourth Proportional to 367,987.20, 551,980.80 and 256,012.80

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Solution

The fourth proportional to 367,987.20, 551,980.80 and 256,012.80 is: 384,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,987.20 : 551,980.80 = 256,012.80 : x
  2. Step 2: Convert to fraction form
    367,987.20/551,980.80 = 256,012.80/x
  3. Step 3: Cross multiply
    367,987.20x = 551,980.80 × 256,012.80
  4. Step 4: Simplify right side
    367,987.20x = 141,314,150,154.24
  5. Step 5: Solve for x
    x = 141,314,150,154.24/367,987.20
  6. Step 6: Final answer
    x = 384,019.20

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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.