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Finding the Fourth Proportional to 575,459.34, 863,485.65 and 255,831.72

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Solution

The fourth proportional to 575,459.34, 863,485.65 and 255,831.72 is: 383,879.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,459.34 : 863,485.65 = 255,831.72 : x
  2. Step 2: Convert to fraction form
    575,459.34/863,485.65 = 255,831.72/x
  3. Step 3: Cross multiply
    575,459.34x = 863,485.65 × 255,831.72
  4. Step 4: Simplify right side
    575,459.34x = 220,907,019,034.82
  5. Step 5: Solve for x
    x = 220,907,019,034.82/575,459.34
  6. Step 6: Final answer
    x = 383,879.46

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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.