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Finding the Fourth Proportional to 449,854.97, 620,867.43 and 258,831.45

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Solution

The fourth proportional to 449,854.97, 620,867.43 and 258,831.45 is: 357,226.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,854.97 : 620,867.43 = 258,831.45 : x
  2. Step 2: Convert to fraction form
    449,854.97/620,867.43 = 258,831.45/x
  3. Step 3: Cross multiply
    449,854.97x = 620,867.43 × 258,831.45
  4. Step 4: Simplify right side
    449,854.97x = 160,700,017,164.67
  5. Step 5: Solve for x
    x = 160,700,017,164.67/449,854.97
  6. Step 6: Final answer
    x = 357,226.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.