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Finding the Fourth Proportional to 432,021.60, 648,032.40 and 132,499.80

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Solution

The fourth proportional to 432,021.60, 648,032.40 and 132,499.80 is: 198,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,021.60 : 648,032.40 = 132,499.80 : x
  2. Step 2: Convert to fraction form
    432,021.60/648,032.40 = 132,499.80/x
  3. Step 3: Cross multiply
    432,021.60x = 648,032.40 × 132,499.80
  4. Step 4: Simplify right side
    432,021.60x = 85,864,163,393.52
  5. Step 5: Solve for x
    x = 85,864,163,393.52/432,021.60
  6. Step 6: Final answer
    x = 198,749.70

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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.