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Finding the Fourth Proportional to 345,862.98, 515,356.22 and 308,133.11

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Solution

The fourth proportional to 345,862.98, 515,356.22 and 308,133.11 is: 459,136.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,862.98 : 515,356.22 = 308,133.11 : x
  2. Step 2: Convert to fraction form
    345,862.98/515,356.22 = 308,133.11/x
  3. Step 3: Cross multiply
    345,862.98x = 515,356.22 × 308,133.11
  4. Step 4: Simplify right side
    345,862.98x = 158,798,316,885.17
  5. Step 5: Solve for x
    x = 158,798,316,885.17/345,862.98
  6. Step 6: Final answer
    x = 459,136.50

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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.