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Finding the Fourth Proportional to 508,391.31, 700,941.67 and 372,188.80

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Solution

The fourth proportional to 508,391.31, 700,941.67 and 372,188.80 is: 513,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,391.31 : 700,941.67 = 372,188.80 : x
  2. Step 2: Convert to fraction form
    508,391.31/700,941.67 = 372,188.80/x
  3. Step 3: Cross multiply
    508,391.31x = 700,941.67 × 372,188.80
  4. Step 4: Simplify right side
    508,391.31x = 260,882,636,216.53
  5. Step 5: Solve for x
    x = 260,882,636,216.53/508,391.31
  6. Step 6: Final answer
    x = 513,153.21

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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.