Home / 280,796.04-387,275.58-212,114.70

Finding the Fourth Proportional to 280,796.04, 387,275.58 and 212,114.70

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Solution

The fourth proportional to 280,796.04, 387,275.58 and 212,114.70 is: 292,549.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,796.04 : 387,275.58 = 212,114.70 : x
  2. Step 2: Convert to fraction form
    280,796.04/387,275.58 = 212,114.70/x
  3. Step 3: Cross multiply
    280,796.04x = 387,275.58 × 212,114.70
  4. Step 4: Simplify right side
    280,796.04x = 82,146,843,469.03
  5. Step 5: Solve for x
    x = 82,146,843,469.03/280,796.04
  6. Step 6: Final answer
    x = 292,549.86

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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.