Home / 389,428.60-537,401.54-219,649.32

Finding the Fourth Proportional to 389,428.60, 537,401.54 and 219,649.32

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Solution

The fourth proportional to 389,428.60, 537,401.54 and 219,649.32 is: 303,110.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,428.60 : 537,401.54 = 219,649.32 : x
  2. Step 2: Convert to fraction form
    389,428.60/537,401.54 = 219,649.32/x
  3. Step 3: Cross multiply
    389,428.60x = 537,401.54 × 219,649.32
  4. Step 4: Simplify right side
    389,428.60x = 118,039,882,827.95
  5. Step 5: Solve for x
    x = 118,039,882,827.95/389,428.60
  6. Step 6: Final answer
    x = 303,110.46

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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.