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Finding the Fourth Proportional to 508,551.61, 701,810.13 and 279,130.36

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Solution

The fourth proportional to 508,551.61, 701,810.13 and 279,130.36 is: 385,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,551.61 : 701,810.13 = 279,130.36 : x
  2. Step 2: Convert to fraction form
    508,551.61/701,810.13 = 279,130.36/x
  3. Step 3: Cross multiply
    508,551.61x = 701,810.13 × 279,130.36
  4. Step 4: Simplify right side
    508,551.61x = 195,896,514,238.55
  5. Step 5: Solve for x
    x = 195,896,514,238.55/508,551.61
  6. Step 6: Final answer
    x = 385,204.79

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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.