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Finding the Fourth Proportional to 288,368.30, 395,058 and 277,586.70

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Solution

The fourth proportional to 288,368.30, 395,058 and 277,586.70 is: 380,287.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,368.30 : 395,058 = 277,586.70 : x
  2. Step 2: Convert to fraction form
    288,368.30/395,058 = 277,586.70/x
  3. Step 3: Cross multiply
    288,368.30x = 395,058 × 277,586.70
  4. Step 4: Simplify right side
    288,368.30x = 109,662,846,528.60
  5. Step 5: Solve for x
    x = 109,662,846,528.60/288,368.30
  6. Step 6: Final answer
    x = 380,287.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.