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Finding the Fourth Proportional to 256,374.59, 384,660.36 and 180,545.90

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Solution

The fourth proportional to 256,374.59, 384,660.36 and 180,545.90 is: 270,888.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,374.59 : 384,660.36 = 180,545.90 : x
  2. Step 2: Convert to fraction form
    256,374.59/384,660.36 = 180,545.90/x
  3. Step 3: Cross multiply
    256,374.59x = 384,660.36 × 180,545.90
  4. Step 4: Simplify right side
    256,374.59x = 69,448,848,967.22
  5. Step 5: Solve for x
    x = 69,448,848,967.22/256,374.59
  6. Step 6: Final answer
    x = 270,888.20

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1.5x scale

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.