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Finding the Fourth Proportional to 256,848.40, 384,754.20 and 178,051.60

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Solution

The fourth proportional to 256,848.40, 384,754.20 and 178,051.60 is: 266,718.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,848.40 : 384,754.20 = 178,051.60 : x
  2. Step 2: Convert to fraction form
    256,848.40/384,754.20 = 178,051.60/x
  3. Step 3: Cross multiply
    256,848.40x = 384,754.20 × 178,051.60
  4. Step 4: Simplify right side
    256,848.40x = 68,506,100,916.72
  5. Step 5: Solve for x
    x = 68,506,100,916.72/256,848.40
  6. Step 6: Final answer
    x = 266,718.04

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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.