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Finding the Fourth Proportional to 370,081.54, 555,343.71 and 339,966.55

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Solution

The fourth proportional to 370,081.54, 555,343.71 and 339,966.55 is: 510,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,081.54 : 555,343.71 = 339,966.55 : x
  2. Step 2: Convert to fraction form
    370,081.54/555,343.71 = 339,966.55/x
  3. Step 3: Cross multiply
    370,081.54x = 555,343.71 × 339,966.55
  4. Step 4: Simplify right side
    370,081.54x = 188,798,285,152.90
  5. Step 5: Solve for x
    x = 188,798,285,152.90/370,081.54
  6. Step 6: Final answer
    x = 510,153.21

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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.