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Finding the Fourth Proportional to 400,435.92, 552,590.64 and 247,412.88

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Solution

The fourth proportional to 400,435.92, 552,590.64 and 247,412.88 is: 341,423.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,435.92 : 552,590.64 = 247,412.88 : x
  2. Step 2: Convert to fraction form
    400,435.92/552,590.64 = 247,412.88/x
  3. Step 3: Cross multiply
    400,435.92x = 552,590.64 × 247,412.88
  4. Step 4: Simplify right side
    400,435.92x = 136,718,041,703.44
  5. Step 5: Solve for x
    x = 136,718,041,703.44/400,435.92
  6. Step 6: Final answer
    x = 341,423.02

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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.