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Finding the Fourth Proportional to 515,641.24, 773,482.82 and 245,630.58

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Solution

The fourth proportional to 515,641.24, 773,482.82 and 245,630.58 is: 368,455.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,641.24 : 773,482.82 = 245,630.58 : x
  2. Step 2: Convert to fraction form
    515,641.24/773,482.82 = 245,630.58/x
  3. Step 3: Cross multiply
    515,641.24x = 773,482.82 × 245,630.58
  4. Step 4: Simplify right side
    515,641.24x = 189,991,033,696.64
  5. Step 5: Solve for x
    x = 189,991,033,696.64/515,641.24
  6. Step 6: Final answer
    x = 368,455.85

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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.