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Finding the Fourth Proportional to 449,831.04, 620,767.44 and 258,840.64

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Solution

The fourth proportional to 449,831.04, 620,767.44 and 258,840.64 is: 357,200.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,831.04 : 620,767.44 = 258,840.64 : x
  2. Step 2: Convert to fraction form
    449,831.04/620,767.44 = 258,840.64/x
  3. Step 3: Cross multiply
    449,831.04x = 620,767.44 × 258,840.64
  4. Step 4: Simplify right side
    449,831.04x = 160,679,841,460.76
  5. Step 5: Solve for x
    x = 160,679,841,460.76/449,831.04
  6. Step 6: Final answer
    x = 357,200.43

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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.