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Finding the Fourth Proportional to 480,208.60, 720,764.88 and 243,721

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Solution

The fourth proportional to 480,208.60, 720,764.88 and 243,721 is: 365,810.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,208.60 : 720,764.88 = 243,721 : x
  2. Step 2: Convert to fraction form
    480,208.60/720,764.88 = 243,721/x
  3. Step 3: Cross multiply
    480,208.60x = 720,764.88 × 243,721
  4. Step 4: Simplify right side
    480,208.60x = 175,665,537,318.48
  5. Step 5: Solve for x
    x = 175,665,537,318.48/480,208.60
  6. Step 6: Final answer
    x = 365,810.89

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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.