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Finding the Fourth Proportional to 280,999.60, 421,302.30 and 103,483.60

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Solution

The fourth proportional to 280,999.60, 421,302.30 and 103,483.60 is: 155,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,999.60 : 421,302.30 = 103,483.60 : x
  2. Step 2: Convert to fraction form
    280,999.60/421,302.30 = 103,483.60/x
  3. Step 3: Cross multiply
    280,999.60x = 421,302.30 × 103,483.60
  4. Step 4: Simplify right side
    280,999.60x = 43,597,878,692.28
  5. Step 5: Solve for x
    x = 43,597,878,692.28/280,999.60
  6. Step 6: Final answer
    x = 155,152.81

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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.