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Finding the Fourth Proportional to 351,681.04, 485,265.01 and 208,417.96

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Solution

The fourth proportional to 351,681.04, 485,265.01 and 208,417.96 is: 287,584.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,681.04 : 485,265.01 = 208,417.96 : x
  2. Step 2: Convert to fraction form
    351,681.04/485,265.01 = 208,417.96/x
  3. Step 3: Cross multiply
    351,681.04x = 485,265.01 × 208,417.96
  4. Step 4: Simplify right side
    351,681.04x = 101,137,939,975.17
  5. Step 5: Solve for x
    x = 101,137,939,975.17/351,681.04
  6. Step 6: Final answer
    x = 287,584.29

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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.