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Finding the Fourth Proportional to 325,939.40, 488,909.10 and 284,467.40

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Solution

The fourth proportional to 325,939.40, 488,909.10 and 284,467.40 is: 426,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,939.40 : 488,909.10 = 284,467.40 : x
  2. Step 2: Convert to fraction form
    325,939.40/488,909.10 = 284,467.40/x
  3. Step 3: Cross multiply
    325,939.40x = 488,909.10 × 284,467.40
  4. Step 4: Simplify right side
    325,939.40x = 139,078,700,513.34
  5. Step 5: Solve for x
    x = 139,078,700,513.34/325,939.40
  6. Step 6: Final answer
    x = 426,701.10

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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.