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Finding the Fourth Proportional to 371,391.98, 515,143.03 and 361,548.12

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Solution

The fourth proportional to 371,391.98, 515,143.03 and 361,548.12 is: 501,489.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,391.98 : 515,143.03 = 361,548.12 : x
  2. Step 2: Convert to fraction form
    371,391.98/515,143.03 = 361,548.12/x
  3. Step 3: Cross multiply
    371,391.98x = 515,143.03 × 361,548.12
  4. Step 4: Simplify right side
    371,391.98x = 186,248,997,030.34
  5. Step 5: Solve for x
    x = 186,248,997,030.34/371,391.98
  6. Step 6: Final answer
    x = 501,489.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.