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Finding the Fourth Proportional to 432,569.70, 648,903.15 and 133,047.90

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Solution

The fourth proportional to 432,569.70, 648,903.15 and 133,047.90 is: 199,586.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,569.70 : 648,903.15 = 133,047.90 : x
  2. Step 2: Convert to fraction form
    432,569.70/648,903.15 = 133,047.90/x
  3. Step 3: Cross multiply
    432,569.70x = 648,903.15 × 133,047.90
  4. Step 4: Simplify right side
    432,569.70x = 86,335,201,410.89
  5. Step 5: Solve for x
    x = 86,335,201,410.89/432,569.70
  6. Step 6: Final answer
    x = 199,586.80

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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.