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Finding the Fourth Proportional to 283,713.66, 390,994.47 and 211,967.10

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Solution

The fourth proportional to 283,713.66, 390,994.47 and 211,967.10 is: 292,118.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,713.66 : 390,994.47 = 211,967.10 : x
  2. Step 2: Convert to fraction form
    283,713.66/390,994.47 = 211,967.10/x
  3. Step 3: Cross multiply
    283,713.66x = 390,994.47 × 211,967.10
  4. Step 4: Simplify right side
    283,713.66x = 82,877,963,921.94
  5. Step 5: Solve for x
    x = 82,877,963,921.94/283,713.66
  6. Step 6: Final answer
    x = 292,118.34

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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.