Home / 389,734.32-537,807.96-219,945.36

Finding the Fourth Proportional to 389,734.32, 537,807.96 and 219,945.36

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Solution

The fourth proportional to 389,734.32, 537,807.96 and 219,945.36 is: 303,510.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,734.32 : 537,807.96 = 219,945.36 : x
  2. Step 2: Convert to fraction form
    389,734.32/537,807.96 = 219,945.36/x
  3. Step 3: Cross multiply
    389,734.32x = 537,807.96 × 219,945.36
  4. Step 4: Simplify right side
    389,734.32x = 118,288,365,373.07
  5. Step 5: Solve for x
    x = 118,288,365,373.07/389,734.32
  6. Step 6: Final answer
    x = 303,510.26

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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.