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Finding the Fourth Proportional to 354,284.28, 488,924.04 and 211,024.80

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Solution

The fourth proportional to 354,284.28, 488,924.04 and 211,024.80 is: 291,221.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,284.28 : 488,924.04 = 211,024.80 : x
  2. Step 2: Convert to fraction form
    354,284.28/488,924.04 = 211,024.80/x
  3. Step 3: Cross multiply
    354,284.28x = 488,924.04 × 211,024.80
  4. Step 4: Simplify right side
    354,284.28x = 103,175,097,756.19
  5. Step 5: Solve for x
    x = 103,175,097,756.19/354,284.28
  6. Step 6: Final answer
    x = 291,221.21

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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.