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Finding the Fourth Proportional to 619,374.80, 928,831.80 and 245,320.40

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Solution

The fourth proportional to 619,374.80, 928,831.80 and 245,320.40 is: 367,889.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,374.80 : 928,831.80 = 245,320.40 : x
  2. Step 2: Convert to fraction form
    619,374.80/928,831.80 = 245,320.40/x
  3. Step 3: Cross multiply
    619,374.80x = 928,831.80 × 245,320.40
  4. Step 4: Simplify right side
    619,374.80x = 227,861,388,708.72
  5. Step 5: Solve for x
    x = 227,861,388,708.72/619,374.80
  6. Step 6: Final answer
    x = 367,889.34

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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.