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Finding the Fourth Proportional to 511,918.65, 767,549.88 and 212,605.83

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Solution

The fourth proportional to 511,918.65, 767,549.88 and 212,605.83 is: 318,772.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,918.65 : 767,549.88 = 212,605.83 : x
  2. Step 2: Convert to fraction form
    511,918.65/767,549.88 = 212,605.83/x
  3. Step 3: Cross multiply
    511,918.65x = 767,549.88 × 212,605.83
  4. Step 4: Simplify right side
    511,918.65x = 163,185,579,303.80
  5. Step 5: Solve for x
    x = 163,185,579,303.80/511,918.65
  6. Step 6: Final answer
    x = 318,772.48

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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.