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Finding the Fourth Proportional to 370,858.80, 556,288.20 and 356,343.60

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Solution

The fourth proportional to 370,858.80, 556,288.20 and 356,343.60 is: 534,515.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,858.80 : 556,288.20 = 356,343.60 : x
  2. Step 2: Convert to fraction form
    370,858.80/556,288.20 = 356,343.60/x
  3. Step 3: Cross multiply
    370,858.80x = 556,288.20 × 356,343.60
  4. Step 4: Simplify right side
    370,858.80x = 198,229,739,825.52
  5. Step 5: Solve for x
    x = 198,229,739,825.52/370,858.80
  6. Step 6: Final answer
    x = 534,515.40

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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.