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Finding the Fourth Proportional to 470,347.39, 649,080.63 and 255,485.71

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Solution

The fourth proportional to 470,347.39, 649,080.63 and 255,485.71 is: 352,570.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,347.39 : 649,080.63 = 255,485.71 : x
  2. Step 2: Convert to fraction form
    470,347.39/649,080.63 = 255,485.71/x
  3. Step 3: Cross multiply
    470,347.39x = 649,080.63 × 255,485.71
  4. Step 4: Simplify right side
    470,347.39x = 165,830,821,079.97
  5. Step 5: Solve for x
    x = 165,830,821,079.97/470,347.39
  6. Step 6: Final answer
    x = 352,570.94

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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.