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Finding the Fourth Proportional to 469,290.51, 647,618.09 and 254,429.91

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Solution

The fourth proportional to 469,290.51, 647,618.09 and 254,429.91 is: 351,111.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,290.51 : 647,618.09 = 254,429.91 : x
  2. Step 2: Convert to fraction form
    469,290.51/647,618.09 = 254,429.91/x
  3. Step 3: Cross multiply
    469,290.51x = 647,618.09 × 254,429.91
  4. Step 4: Simplify right side
    469,290.51x = 164,773,411,080.92
  5. Step 5: Solve for x
    x = 164,773,411,080.92/469,290.51
  6. Step 6: Final answer
    x = 351,111.75

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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.