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Finding the Fourth Proportional to 317,170.08, 475,755.12 and 127,688.40

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Solution

The fourth proportional to 317,170.08, 475,755.12 and 127,688.40 is: 191,532.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,170.08 : 475,755.12 = 127,688.40 : x
  2. Step 2: Convert to fraction form
    317,170.08/475,755.12 = 127,688.40/x
  3. Step 3: Cross multiply
    317,170.08x = 475,755.12 × 127,688.40
  4. Step 4: Simplify right side
    317,170.08x = 60,748,410,064.61
  5. Step 5: Solve for x
    x = 60,748,410,064.61/317,170.08
  6. Step 6: Final answer
    x = 191,532.60

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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.