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Finding the Fourth Proportional to 665,341.50, 918,171.27 and 363,535.50

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Solution

The fourth proportional to 665,341.50, 918,171.27 and 363,535.50 is: 501,678.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,341.50 : 918,171.27 = 363,535.50 : x
  2. Step 2: Convert to fraction form
    665,341.50/918,171.27 = 363,535.50/x
  3. Step 3: Cross multiply
    665,341.50x = 918,171.27 × 363,535.50
  4. Step 4: Simplify right side
    665,341.50x = 333,787,851,725.09
  5. Step 5: Solve for x
    x = 333,787,851,725.09/665,341.50
  6. Step 6: Final answer
    x = 501,678.99

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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.