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Finding the Fourth Proportional to 283,104.83, 390,672.88 and 154,043.81

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Solution

The fourth proportional to 283,104.83, 390,672.88 and 154,043.81 is: 212,574.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,104.83 : 390,672.88 = 154,043.81 : x
  2. Step 2: Convert to fraction form
    283,104.83/390,672.88 = 154,043.81/x
  3. Step 3: Cross multiply
    283,104.83x = 390,672.88 × 154,043.81
  4. Step 4: Simplify right side
    283,104.83x = 60,180,739,490.45
  5. Step 5: Solve for x
    x = 60,180,739,490.45/283,104.83
  6. Step 6: Final answer
    x = 212,574.05

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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.