Home / 389,729.36-537,851.40-219,901.52

Finding the Fourth Proportional to 389,729.36, 537,851.40 and 219,901.52

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Solution

The fourth proportional to 389,729.36, 537,851.40 and 219,901.52 is: 303,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,729.36 : 537,851.40 = 219,901.52 : x
  2. Step 2: Convert to fraction form
    389,729.36/537,851.40 = 219,901.52/x
  3. Step 3: Cross multiply
    389,729.36x = 537,851.40 × 219,901.52
  4. Step 4: Simplify right side
    389,729.36x = 118,274,340,394.13
  5. Step 5: Solve for x
    x = 118,274,340,394.13/389,729.36
  6. Step 6: Final answer
    x = 303,478.14

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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.