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Finding the Fourth Proportional to 398,981.93, 550,475.12 and 262,967.00

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Solution

The fourth proportional to 398,981.93, 550,475.12 and 262,967.00 is: 362,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,981.93 : 550,475.12 = 262,967.00 : x
  2. Step 2: Convert to fraction form
    398,981.93/550,475.12 = 262,967.00/x
  3. Step 3: Cross multiply
    398,981.93x = 550,475.12 × 262,967.00
  4. Step 4: Simplify right side
    398,981.93x = 144,756,788,786.08
  5. Step 5: Solve for x
    x = 144,756,788,786.08/398,981.93
  6. Step 6: Final answer
    x = 362,815.41

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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.