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Finding the Fourth Proportional to 432,862.60, 648,986.70 and 166,520.20

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Solution

The fourth proportional to 432,862.60, 648,986.70 and 166,520.20 is: 249,662.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,862.60 : 648,986.70 = 166,520.20 : x
  2. Step 2: Convert to fraction form
    432,862.60/648,986.70 = 166,520.20/x
  3. Step 3: Cross multiply
    432,862.60x = 648,986.70 × 166,520.20
  4. Step 4: Simplify right side
    432,862.60x = 108,069,395,081.34
  5. Step 5: Solve for x
    x = 108,069,395,081.34/432,862.60
  6. Step 6: Final answer
    x = 249,662.12

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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.