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Finding the Fourth Proportional to 387,877.95, 580,570.34 and 207,513.36

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Solution

The fourth proportional to 387,877.95, 580,570.34 and 207,513.36 is: 310,603.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,877.95 : 580,570.34 = 207,513.36 : x
  2. Step 2: Convert to fraction form
    387,877.95/580,570.34 = 207,513.36/x
  3. Step 3: Cross multiply
    387,877.95x = 580,570.34 × 207,513.36
  4. Step 4: Simplify right side
    387,877.95x = 120,476,100,932.18
  5. Step 5: Solve for x
    x = 120,476,100,932.18/387,877.95
  6. Step 6: Final answer
    x = 310,603.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.