Home / 811,095.60-1,216,712.44-212,055.80

Finding the Fourth Proportional to 811,095.60, 1,216,712.44 and 212,055.80

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Solution

The fourth proportional to 811,095.60, 1,216,712.44 and 212,055.80 is: 318,101.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,095.60 : 1,216,712.44 = 212,055.80 : x
  2. Step 2: Convert to fraction form
    811,095.60/1,216,712.44 = 212,055.80/x
  3. Step 3: Cross multiply
    811,095.60x = 1,216,712.44 × 212,055.80
  4. Step 4: Simplify right side
    811,095.60x = 258,010,927,437.66
  5. Step 5: Solve for x
    x = 258,010,927,437.66/811,095.60
  6. Step 6: Final answer
    x = 318,101.75

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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.