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Finding the Fourth Proportional to 483,139.92, 666,386.10 and 299,318.88

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Solution

The fourth proportional to 483,139.92, 666,386.10 and 299,318.88 is: 412,845.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,139.92 : 666,386.10 = 299,318.88 : x
  2. Step 2: Convert to fraction form
    483,139.92/666,386.10 = 299,318.88/x
  3. Step 3: Cross multiply
    483,139.92x = 666,386.10 × 299,318.88
  4. Step 4: Simplify right side
    483,139.92x = 199,461,941,099.57
  5. Step 5: Solve for x
    x = 199,461,941,099.57/483,139.92
  6. Step 6: Final answer
    x = 412,845.08

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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.