Home / 347,946.20-521,141.70-285,738.20

Finding the Fourth Proportional to 347,946.20, 521,141.70 and 285,738.20

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Solution

The fourth proportional to 347,946.20, 521,141.70 and 285,738.20 is: 427,968.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,946.20 : 521,141.70 = 285,738.20 : x
  2. Step 2: Convert to fraction form
    347,946.20/521,141.70 = 285,738.20/x
  3. Step 3: Cross multiply
    347,946.20x = 521,141.70 × 285,738.20
  4. Step 4: Simplify right side
    347,946.20x = 148,910,091,302.94
  5. Step 5: Solve for x
    x = 148,910,091,302.94/347,946.20
  6. Step 6: Final answer
    x = 427,968.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.