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Finding the Fourth Proportional to 256,625.70, 384,209.55 and 242,661.30

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Solution

The fourth proportional to 256,625.70, 384,209.55 and 242,661.30 is: 363,302.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,625.70 : 384,209.55 = 242,661.30 : x
  2. Step 2: Convert to fraction form
    256,625.70/384,209.55 = 242,661.30/x
  3. Step 3: Cross multiply
    256,625.70x = 384,209.55 × 242,661.30
  4. Step 4: Simplify right side
    256,625.70x = 93,232,788,875.42
  5. Step 5: Solve for x
    x = 93,232,788,875.42/256,625.70
  6. Step 6: Final answer
    x = 363,302.62

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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.