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Finding the Fourth Proportional to 256,943.02, 385,425.06 and 69,954.52

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Solution

The fourth proportional to 256,943.02, 385,425.06 and 69,954.52 is: 104,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,943.02 : 385,425.06 = 69,954.52 : x
  2. Step 2: Convert to fraction form
    256,943.02/385,425.06 = 69,954.52/x
  3. Step 3: Cross multiply
    256,943.02x = 385,425.06 × 69,954.52
  4. Step 4: Simplify right side
    256,943.02x = 26,962,225,068.27
  5. Step 5: Solve for x
    x = 26,962,225,068.27/256,943.02
  6. Step 6: Final answer
    x = 104,934.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.