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Finding the Fourth Proportional to 343,657.80, 515,486.70 and 237,369.60

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Solution

The fourth proportional to 343,657.80, 515,486.70 and 237,369.60 is: 356,054.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,657.80 : 515,486.70 = 237,369.60 : x
  2. Step 2: Convert to fraction form
    343,657.80/515,486.70 = 237,369.60/x
  3. Step 3: Cross multiply
    343,657.80x = 515,486.70 × 237,369.60
  4. Step 4: Simplify right side
    343,657.80x = 122,360,871,784.32
  5. Step 5: Solve for x
    x = 122,360,871,784.32/343,657.80
  6. Step 6: Final answer
    x = 356,054.40

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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.