Home / 389,731.36-537,854.16-219,903.52

Finding the Fourth Proportional to 389,731.36, 537,854.16 and 219,903.52

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Solution

The fourth proportional to 389,731.36, 537,854.16 and 219,903.52 is: 303,480.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,731.36 : 537,854.16 = 219,903.52 : x
  2. Step 2: Convert to fraction form
    389,731.36/537,854.16 = 219,903.52/x
  3. Step 3: Cross multiply
    389,731.36x = 537,854.16 × 219,903.52
  4. Step 4: Simplify right side
    389,731.36x = 118,276,023,030.64
  5. Step 5: Solve for x
    x = 118,276,023,030.64/389,731.36
  6. Step 6: Final answer
    x = 303,480.90

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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.