Home / 213,582.45-320,215.50-129,322.81

Finding the Fourth Proportional to 213,582.45, 320,215.50 and 129,322.81

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Solution

The fourth proportional to 213,582.45, 320,215.50 and 129,322.81 is: 193,888.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,582.45 : 320,215.50 = 129,322.81 : x
  2. Step 2: Convert to fraction form
    213,582.45/320,215.50 = 129,322.81/x
  3. Step 3: Cross multiply
    213,582.45x = 320,215.50 × 129,322.81
  4. Step 4: Simplify right side
    213,582.45x = 41,411,167,541.98
  5. Step 5: Solve for x
    x = 41,411,167,541.98/213,582.45
  6. Step 6: Final answer
    x = 193,888.44

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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.