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Finding the Fourth Proportional to 521,970.55, 720,307.49 and 304,165.60

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Solution

The fourth proportional to 521,970.55, 720,307.49 and 304,165.60 is: 419,741.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,970.55 : 720,307.49 = 304,165.60 : x
  2. Step 2: Convert to fraction form
    521,970.55/720,307.49 = 304,165.60/x
  3. Step 3: Cross multiply
    521,970.55x = 720,307.49 × 304,165.60
  4. Step 4: Simplify right side
    521,970.55x = 219,092,756,558.75
  5. Step 5: Solve for x
    x = 219,092,756,558.75/521,970.55
  6. Step 6: Final answer
    x = 419,741.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.