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Finding the Fourth Proportional to 310,571.65, 428,578.95 and 174,611.35

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Solution

The fourth proportional to 310,571.65, 428,578.95 and 174,611.35 is: 240,958.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,571.65 : 428,578.95 = 174,611.35 : x
  2. Step 2: Convert to fraction form
    310,571.65/428,578.95 = 174,611.35/x
  3. Step 3: Cross multiply
    310,571.65x = 428,578.95 × 174,611.35
  4. Step 4: Simplify right side
    310,571.65x = 74,834,749,041.08
  5. Step 5: Solve for x
    x = 74,834,749,041.08/310,571.65
  6. Step 6: Final answer
    x = 240,958.08

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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.