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Finding the Fourth Proportional to 637,203, 879,340.14 and 368,931

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Solution

The fourth proportional to 637,203, 879,340.14 and 368,931 is: 509,124.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,203 : 879,340.14 = 368,931 : x
  2. Step 2: Convert to fraction form
    637,203/879,340.14 = 368,931/x
  3. Step 3: Cross multiply
    637,203x = 879,340.14 × 368,931
  4. Step 4: Simplify right side
    637,203x = 324,415,837,190.34
  5. Step 5: Solve for x
    x = 324,415,837,190.34/637,203
  6. Step 6: Final answer
    x = 509,124.78

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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.