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Finding the Fourth Proportional to 286,012.80, 393,800.40 and 242,902.44

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Solution

The fourth proportional to 286,012.80, 393,800.40 and 242,902.44 is: 334,443.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,012.80 : 393,800.40 = 242,902.44 : x
  2. Step 2: Convert to fraction form
    286,012.80/393,800.40 = 242,902.44/x
  3. Step 3: Cross multiply
    286,012.80x = 393,800.40 × 242,902.44
  4. Step 4: Simplify right side
    286,012.80x = 95,655,078,032.98
  5. Step 5: Solve for x
    x = 95,655,078,032.98/286,012.80
  6. Step 6: Final answer
    x = 334,443.35

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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.