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Finding the Fourth Proportional to 432,003.60, 648,005.40 and 243,046.80

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Solution

The fourth proportional to 432,003.60, 648,005.40 and 243,046.80 is: 364,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,003.60 : 648,005.40 = 243,046.80 : x
  2. Step 2: Convert to fraction form
    432,003.60/648,005.40 = 243,046.80/x
  3. Step 3: Cross multiply
    432,003.60x = 648,005.40 × 243,046.80
  4. Step 4: Simplify right side
    432,003.60x = 157,495,638,852.72
  5. Step 5: Solve for x
    x = 157,495,638,852.72/432,003.60
  6. Step 6: Final answer
    x = 364,570.20

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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.