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Finding the Fourth Proportional to 389,038.80, 537,028.16 and 334,374.56

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Solution

The fourth proportional to 389,038.80, 537,028.16 and 334,374.56 is: 461,569.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,038.80 : 537,028.16 = 334,374.56 : x
  2. Step 2: Convert to fraction form
    389,038.80/537,028.16 = 334,374.56/x
  3. Step 3: Cross multiply
    389,038.80x = 537,028.16 × 334,374.56
  4. Step 4: Simplify right side
    389,038.80x = 179,568,554,707.61
  5. Step 5: Solve for x
    x = 179,568,554,707.61/389,038.80
  6. Step 6: Final answer
    x = 461,569.78

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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.