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Finding the Fourth Proportional to 318,041.96, 438,907.16 and 174,811.28

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Solution

The fourth proportional to 318,041.96, 438,907.16 and 174,811.28 is: 241,244.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,041.96 : 438,907.16 = 174,811.28 : x
  2. Step 2: Convert to fraction form
    318,041.96/438,907.16 = 174,811.28/x
  3. Step 3: Cross multiply
    318,041.96x = 438,907.16 × 174,811.28
  4. Step 4: Simplify right side
    318,041.96x = 76,725,922,440.76
  5. Step 5: Solve for x
    x = 76,725,922,440.76/318,041.96
  6. Step 6: Final answer
    x = 241,244.65

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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.