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Finding the Fourth Proportional to 389,548.95, 537,578.07 and 219,798.87

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Solution

The fourth proportional to 389,548.95, 537,578.07 and 219,798.87 is: 303,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,548.95 : 537,578.07 = 219,798.87 : x
  2. Step 2: Convert to fraction form
    389,548.95/537,578.07 = 219,798.87/x
  3. Step 3: Cross multiply
    389,548.95x = 537,578.07 × 219,798.87
  4. Step 4: Simplify right side
    389,548.95x = 118,159,048,535.90
  5. Step 5: Solve for x
    x = 118,159,048,535.90/389,548.95
  6. Step 6: Final answer
    x = 303,322.73

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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.