Home / 389,266.56-537,030-274,711.50

Finding the Fourth Proportional to 389,266.56, 537,030 and 274,711.50

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Solution

The fourth proportional to 389,266.56, 537,030 and 274,711.50 is: 378,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,266.56 : 537,030 = 274,711.50 : x
  2. Step 2: Convert to fraction form
    389,266.56/537,030 = 274,711.50/x
  3. Step 3: Cross multiply
    389,266.56x = 537,030 × 274,711.50
  4. Step 4: Simplify right side
    389,266.56x = 147,528,316,845
  5. Step 5: Solve for x
    x = 147,528,316,845/389,266.56
  6. Step 6: Final answer
    x = 378,990.47

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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.