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Finding the Fourth Proportional to 479,991.42, 662,301.60 and 310,127.16

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Solution

The fourth proportional to 479,991.42, 662,301.60 and 310,127.16 is: 427,919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,991.42 : 662,301.60 = 310,127.16 : x
  2. Step 2: Convert to fraction form
    479,991.42/662,301.60 = 310,127.16/x
  3. Step 3: Cross multiply
    479,991.42x = 662,301.60 × 310,127.16
  4. Step 4: Simplify right side
    479,991.42x = 205,397,714,271.46
  5. Step 5: Solve for x
    x = 205,397,714,271.46/479,991.42
  6. Step 6: Final answer
    x = 427,919.55

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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.