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Finding the Fourth Proportional to 407,445.12, 562,247 and 246,388.98

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Solution

The fourth proportional to 407,445.12, 562,247 and 246,388.98 is: 340,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,445.12 : 562,247 = 246,388.98 : x
  2. Step 2: Convert to fraction form
    407,445.12/562,247 = 246,388.98/x
  3. Step 3: Cross multiply
    407,445.12x = 562,247 × 246,388.98
  4. Step 4: Simplify right side
    407,445.12x = 138,531,464,838.06
  5. Step 5: Solve for x
    x = 138,531,464,838.06/407,445.12
  6. Step 6: Final answer
    x = 340,000.30

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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.