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Finding the Fourth Proportional to 541,207.88, 808,493.20 and 390,159.08

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Solution

The fourth proportional to 541,207.88, 808,493.20 and 390,159.08 is: 582,846.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,207.88 : 808,493.20 = 390,159.08 : x
  2. Step 2: Convert to fraction form
    541,207.88/808,493.20 = 390,159.08/x
  3. Step 3: Cross multiply
    541,207.88x = 808,493.20 × 390,159.08
  4. Step 4: Simplify right side
    541,207.88x = 315,440,963,098.26
  5. Step 5: Solve for x
    x = 315,440,963,098.26/541,207.88
  6. Step 6: Final answer
    x = 582,846.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.