Home / 860,851.80-1,291,277.70-221,154.30

Finding the Fourth Proportional to 860,851.80, 1,291,277.70 and 221,154.30

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Solution

The fourth proportional to 860,851.80, 1,291,277.70 and 221,154.30 is: 331,731.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,851.80 : 1,291,277.70 = 221,154.30 : x
  2. Step 2: Convert to fraction form
    860,851.80/1,291,277.70 = 221,154.30/x
  3. Step 3: Cross multiply
    860,851.80x = 1,291,277.70 × 221,154.30
  4. Step 4: Simplify right side
    860,851.80x = 285,571,615,849.11
  5. Step 5: Solve for x
    x = 285,571,615,849.11/860,851.80
  6. Step 6: Final answer
    x = 331,731.45

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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.