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Finding the Fourth Proportional to 470,519.45, 649,320.80 and 255,659.52

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Solution

The fourth proportional to 470,519.45, 649,320.80 and 255,659.52 is: 352,812.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,519.45 : 649,320.80 = 255,659.52 : x
  2. Step 2: Convert to fraction form
    470,519.45/649,320.80 = 255,659.52/x
  3. Step 3: Cross multiply
    470,519.45x = 649,320.80 × 255,659.52
  4. Step 4: Simplify right side
    470,519.45x = 166,005,044,054.02
  5. Step 5: Solve for x
    x = 166,005,044,054.02/470,519.45
  6. Step 6: Final answer
    x = 352,812.29

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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.