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Finding the Fourth Proportional to 523,711.16, 722,689.26 and 308,860.28

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Solution

The fourth proportional to 523,711.16, 722,689.26 and 308,860.28 is: 426,208.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,711.16 : 722,689.26 = 308,860.28 : x
  2. Step 2: Convert to fraction form
    523,711.16/722,689.26 = 308,860.28/x
  3. Step 3: Cross multiply
    523,711.16x = 722,689.26 × 308,860.28
  4. Step 4: Simplify right side
    523,711.16x = 223,210,007,196.59
  5. Step 5: Solve for x
    x = 223,210,007,196.59/523,711.16
  6. Step 6: Final answer
    x = 426,208.23

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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.