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Finding the Fourth Proportional to 319,554.86, 478,847.33 and 234,911.81

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Solution

The fourth proportional to 319,554.86, 478,847.33 and 234,911.81 is: 352,011.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,554.86 : 478,847.33 = 234,911.81 : x
  2. Step 2: Convert to fraction form
    319,554.86/478,847.33 = 234,911.81/x
  3. Step 3: Cross multiply
    319,554.86x = 478,847.33 × 234,911.81
  4. Step 4: Simplify right side
    319,554.86x = 112,486,893,907.45
  5. Step 5: Solve for x
    x = 112,486,893,907.45/319,554.86
  6. Step 6: Final answer
    x = 352,011.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.