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Finding the Fourth Proportional to 434,319.60, 650,212.20 and 309,903.60

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Solution

The fourth proportional to 434,319.60, 650,212.20 and 309,903.60 is: 463,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,319.60 : 650,212.20 = 309,903.60 : x
  2. Step 2: Convert to fraction form
    434,319.60/650,212.20 = 309,903.60/x
  3. Step 3: Cross multiply
    434,319.60x = 650,212.20 × 309,903.60
  4. Step 4: Simplify right side
    434,319.60x = 201,503,101,543.92
  5. Step 5: Solve for x
    x = 201,503,101,543.92/434,319.60
  6. Step 6: Final answer
    x = 463,951.20

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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.