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Finding the Fourth Proportional to 483,330.40, 724,304.40 and 355,976.80

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Solution

The fourth proportional to 483,330.40, 724,304.40 and 355,976.80 is: 533,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,330.40 : 724,304.40 = 355,976.80 : x
  2. Step 2: Convert to fraction form
    483,330.40/724,304.40 = 355,976.80/x
  3. Step 3: Cross multiply
    483,330.40x = 724,304.40 × 355,976.80
  4. Step 4: Simplify right side
    483,330.40x = 257,835,562,537.92
  5. Step 5: Solve for x
    x = 257,835,562,537.92/483,330.40
  6. Step 6: Final answer
    x = 533,456.13

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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.