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Finding the Fourth Proportional to 329,130.72, 453,860.64 and 281,541.60

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Solution

The fourth proportional to 329,130.72, 453,860.64 and 281,541.60 is: 388,236.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,130.72 : 453,860.64 = 281,541.60 : x
  2. Step 2: Convert to fraction form
    329,130.72/453,860.64 = 281,541.60/x
  3. Step 3: Cross multiply
    329,130.72x = 453,860.64 × 281,541.60
  4. Step 4: Simplify right side
    329,130.72x = 127,780,650,762.62
  5. Step 5: Solve for x
    x = 127,780,650,762.62/329,130.72
  6. Step 6: Final answer
    x = 388,236.78

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1.5x scale

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.