Home / 343,815.60-515,723.40-307,657.20

Finding the Fourth Proportional to 343,815.60, 515,723.40 and 307,657.20

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Solution

The fourth proportional to 343,815.60, 515,723.40 and 307,657.20 is: 461,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,815.60 : 515,723.40 = 307,657.20 : x
  2. Step 2: Convert to fraction form
    343,815.60/515,723.40 = 307,657.20/x
  3. Step 3: Cross multiply
    343,815.60x = 515,723.40 × 307,657.20
  4. Step 4: Simplify right side
    343,815.60x = 158,666,017,218.48
  5. Step 5: Solve for x
    x = 158,666,017,218.48/343,815.60
  6. Step 6: Final answer
    x = 461,485.80

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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.