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Finding the Fourth Proportional to 480,130.97, 662,372.58 and 289,033.64

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Solution

The fourth proportional to 480,130.97, 662,372.58 and 289,033.64 is: 398,741.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,130.97 : 662,372.58 = 289,033.64 : x
  2. Step 2: Convert to fraction form
    480,130.97/662,372.58 = 289,033.64/x
  3. Step 3: Cross multiply
    480,130.97x = 662,372.58 × 289,033.64
  4. Step 4: Simplify right side
    480,130.97x = 191,447,959,489.52
  5. Step 5: Solve for x
    x = 191,447,959,489.52/480,130.97
  6. Step 6: Final answer
    x = 398,741.12

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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.