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Finding the Fourth Proportional to 449,373.64, 619,080.78 and 313,159.96

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Solution

The fourth proportional to 449,373.64, 619,080.78 and 313,159.96 is: 431,425.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,373.64 : 619,080.78 = 313,159.96 : x
  2. Step 2: Convert to fraction form
    449,373.64/619,080.78 = 313,159.96/x
  3. Step 3: Cross multiply
    449,373.64x = 619,080.78 × 313,159.96
  4. Step 4: Simplify right side
    449,373.64x = 193,871,312,301.57
  5. Step 5: Solve for x
    x = 193,871,312,301.57/449,373.64
  6. Step 6: Final answer
    x = 431,425.64

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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.