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Finding the Fourth Proportional to 482,638.40, 724,303.20 and 202,356.80

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Solution

The fourth proportional to 482,638.40, 724,303.20 and 202,356.80 is: 303,680.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,638.40 : 724,303.20 = 202,356.80 : x
  2. Step 2: Convert to fraction form
    482,638.40/724,303.20 = 202,356.80/x
  3. Step 3: Cross multiply
    482,638.40x = 724,303.20 × 202,356.80
  4. Step 4: Simplify right side
    482,638.40x = 146,567,677,781.76
  5. Step 5: Solve for x
    x = 146,567,677,781.76/482,638.40
  6. Step 6: Final answer
    x = 303,680.10

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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.