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Finding the Fourth Proportional to 343,490.42, 515,282.41 and 118,790.55

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Solution

The fourth proportional to 343,490.42, 515,282.41 and 118,790.55 is: 178,202.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,490.42 : 515,282.41 = 118,790.55 : x
  2. Step 2: Convert to fraction form
    343,490.42/515,282.41 = 118,790.55/x
  3. Step 3: Cross multiply
    343,490.42x = 515,282.41 × 118,790.55
  4. Step 4: Simplify right side
    343,490.42x = 61,210,681,037.71
  5. Step 5: Solve for x
    x = 61,210,681,037.71/343,490.42
  6. Step 6: Final answer
    x = 178,202.00

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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.