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Finding the Fourth Proportional to 272,039.64, 408,090.51 and 72,368.16

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Solution

The fourth proportional to 272,039.64, 408,090.51 and 72,368.16 is: 108,560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,039.64 : 408,090.51 = 72,368.16 : x
  2. Step 2: Convert to fraction form
    272,039.64/408,090.51 = 72,368.16/x
  3. Step 3: Cross multiply
    272,039.64x = 408,090.51 × 72,368.16
  4. Step 4: Simplify right side
    272,039.64x = 29,532,759,322.16
  5. Step 5: Solve for x
    x = 29,532,759,322.16/272,039.64
  6. Step 6: Final answer
    x = 108,560.50

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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.