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Finding the Fourth Proportional to 485,784.94, 670,366.74 and 268,002.32

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Solution

The fourth proportional to 485,784.94, 670,366.74 and 268,002.32 is: 369,834.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,784.94 : 670,366.74 = 268,002.32 : x
  2. Step 2: Convert to fraction form
    485,784.94/670,366.74 = 268,002.32/x
  3. Step 3: Cross multiply
    485,784.94x = 670,366.74 × 268,002.32
  4. Step 4: Simplify right side
    485,784.94x = 179,659,841,570.84
  5. Step 5: Solve for x
    x = 179,659,841,570.84/485,784.94
  6. Step 6: Final answer
    x = 369,834.11

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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.