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Finding the Fourth Proportional to 470,615.72, 649,453.80 and 255,755.76

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Solution

The fourth proportional to 470,615.72, 649,453.80 and 255,755.76 is: 352,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,615.72 : 649,453.80 = 255,755.76 : x
  2. Step 2: Convert to fraction form
    470,615.72/649,453.80 = 255,755.76/x
  3. Step 3: Cross multiply
    470,615.72x = 649,453.80 × 255,755.76
  4. Step 4: Simplify right side
    470,615.72x = 166,101,550,203.89
  5. Step 5: Solve for x
    x = 166,101,550,203.89/470,615.72
  6. Step 6: Final answer
    x = 352,945.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.