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Finding the Fourth Proportional to 403,500.20, 556,879.20 and 242,439.80

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Solution

The fourth proportional to 403,500.20, 556,879.20 and 242,439.80 is: 334,596.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,500.20 : 556,879.20 = 242,439.80 : x
  2. Step 2: Convert to fraction form
    403,500.20/556,879.20 = 242,439.80/x
  3. Step 3: Cross multiply
    403,500.20x = 556,879.20 × 242,439.80
  4. Step 4: Simplify right side
    403,500.20x = 135,009,681,872.16
  5. Step 5: Solve for x
    x = 135,009,681,872.16/403,500.20
  6. Step 6: Final answer
    x = 334,596.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.