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Finding the Fourth Proportional to 347,339.60, 521,009.40 and 263,358.80

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Solution

The fourth proportional to 347,339.60, 521,009.40 and 263,358.80 is: 395,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,339.60 : 521,009.40 = 263,358.80 : x
  2. Step 2: Convert to fraction form
    347,339.60/521,009.40 = 263,358.80/x
  3. Step 3: Cross multiply
    347,339.60x = 521,009.40 × 263,358.80
  4. Step 4: Simplify right side
    347,339.60x = 137,212,410,372.72
  5. Step 5: Solve for x
    x = 137,212,410,372.72/347,339.60
  6. Step 6: Final answer
    x = 395,038.20

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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.