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Finding the Fourth Proportional to 468,015.72, 645,859.26 and 253,155.12

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Solution

The fourth proportional to 468,015.72, 645,859.26 and 253,155.12 is: 349,352.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,015.72 : 645,859.26 = 253,155.12 : x
  2. Step 2: Convert to fraction form
    468,015.72/645,859.26 = 253,155.12/x
  3. Step 3: Cross multiply
    468,015.72x = 645,859.26 × 253,155.12
  4. Step 4: Simplify right side
    468,015.72x = 163,502,578,468.41
  5. Step 5: Solve for x
    x = 163,502,578,468.41/468,015.72
  6. Step 6: Final answer
    x = 349,352.75

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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.