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Finding the Fourth Proportional to 483,289.80, 666,931.26 and 268,428

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Solution

The fourth proportional to 483,289.80, 666,931.26 and 268,428 is: 370,425.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,289.80 : 666,931.26 = 268,428 : x
  2. Step 2: Convert to fraction form
    483,289.80/666,931.26 = 268,428/x
  3. Step 3: Cross multiply
    483,289.80x = 666,931.26 × 268,428
  4. Step 4: Simplify right side
    483,289.80x = 179,023,024,259.28
  5. Step 5: Solve for x
    x = 179,023,024,259.28/483,289.80
  6. Step 6: Final answer
    x = 370,425.83

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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.