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Finding the Fourth Proportional to 283,406.04, 390,775.86 and 211,664.88

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Solution

The fourth proportional to 283,406.04, 390,775.86 and 211,664.88 is: 291,855.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,406.04 : 390,775.86 = 211,664.88 : x
  2. Step 2: Convert to fraction form
    283,406.04/390,775.86 = 211,664.88/x
  3. Step 3: Cross multiply
    283,406.04x = 390,775.86 × 211,664.88
  4. Step 4: Simplify right side
    283,406.04x = 82,713,525,513.80
  5. Step 5: Solve for x
    x = 82,713,525,513.80/283,406.04
  6. Step 6: Final answer
    x = 291,855.20

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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.