Home / 389,868.76-537,988.86-220,119.64

Finding the Fourth Proportional to 389,868.76, 537,988.86 and 220,119.64

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Solution

The fourth proportional to 389,868.76, 537,988.86 and 220,119.64 is: 303,748.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,868.76 : 537,988.86 = 220,119.64 : x
  2. Step 2: Convert to fraction form
    389,868.76/537,988.86 = 220,119.64/x
  3. Step 3: Cross multiply
    389,868.76x = 537,988.86 × 220,119.64
  4. Step 4: Simplify right side
    389,868.76x = 118,421,914,187.21
  5. Step 5: Solve for x
    x = 118,421,914,187.21/389,868.76
  6. Step 6: Final answer
    x = 303,748.15

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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.