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Finding the Fourth Proportional to 343,818.40, 515,857.20 and 166,482.40

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Solution

The fourth proportional to 343,818.40, 515,857.20 and 166,482.40 is: 249,786.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,818.40 : 515,857.20 = 166,482.40 : x
  2. Step 2: Convert to fraction form
    343,818.40/515,857.20 = 166,482.40/x
  3. Step 3: Cross multiply
    343,818.40x = 515,857.20 × 166,482.40
  4. Step 4: Simplify right side
    343,818.40x = 85,881,144,713.28
  5. Step 5: Solve for x
    x = 85,881,144,713.28/343,818.40
  6. Step 6: Final answer
    x = 249,786.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.