Home / 220,739.63-329,276.79-213,359.72

Finding the Fourth Proportional to 220,739.63, 329,276.79 and 213,359.72

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Solution

The fourth proportional to 220,739.63, 329,276.79 and 213,359.72 is: 318,268.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,739.63 : 329,276.79 = 213,359.72 : x
  2. Step 2: Convert to fraction form
    220,739.63/329,276.79 = 213,359.72/x
  3. Step 3: Cross multiply
    220,739.63x = 329,276.79 × 213,359.72
  4. Step 4: Simplify right side
    220,739.63x = 70,254,402,070.51
  5. Step 5: Solve for x
    x = 70,254,402,070.51/220,739.63
  6. Step 6: Final answer
    x = 318,268.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.