Home / 389,278.53-537,222.78-219,509.01

Finding the Fourth Proportional to 389,278.53, 537,222.78 and 219,509.01

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Solution

The fourth proportional to 389,278.53, 537,222.78 and 219,509.01 is: 302,932.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,278.53 : 537,222.78 = 219,509.01 : x
  2. Step 2: Convert to fraction form
    389,278.53/537,222.78 = 219,509.01/x
  3. Step 3: Cross multiply
    389,278.53x = 537,222.78 × 219,509.01
  4. Step 4: Simplify right side
    389,278.53x = 117,925,240,587.25
  5. Step 5: Solve for x
    x = 117,925,240,587.25/389,278.53
  6. Step 6: Final answer
    x = 302,932.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.