Home / 811,184.86-1,216,684.34-212,203.83

Finding the Fourth Proportional to 811,184.86, 1,216,684.34 and 212,203.83

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Solution

The fourth proportional to 811,184.86, 1,216,684.34 and 212,203.83 is: 318,281.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,184.86 : 1,216,684.34 = 212,203.83 : x
  2. Step 2: Convert to fraction form
    811,184.86/1,216,684.34 = 212,203.83/x
  3. Step 3: Cross multiply
    811,184.86x = 1,216,684.34 × 212,203.83
  4. Step 4: Simplify right side
    811,184.86x = 258,185,076,849.02
  5. Step 5: Solve for x
    x = 258,185,076,849.02/811,184.86
  6. Step 6: Final answer
    x = 318,281.43

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1.5x scale

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.