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Finding the Fourth Proportional to 256,946.80, 385,420.20 and 162,468.40

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Solution

The fourth proportional to 256,946.80, 385,420.20 and 162,468.40 is: 243,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,946.80 : 385,420.20 = 162,468.40 : x
  2. Step 2: Convert to fraction form
    256,946.80/385,420.20 = 162,468.40/x
  3. Step 3: Cross multiply
    256,946.80x = 385,420.20 × 162,468.40
  4. Step 4: Simplify right side
    256,946.80x = 62,618,603,221.68
  5. Step 5: Solve for x
    x = 62,618,603,221.68/256,946.80
  6. Step 6: Final answer
    x = 243,702.60

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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.