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Finding the Fourth Proportional to 391,499.64, 540,243.88 and 230,323.52

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Solution

The fourth proportional to 391,499.64, 540,243.88 and 230,323.52 is: 317,831.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,499.64 : 540,243.88 = 230,323.52 : x
  2. Step 2: Convert to fraction form
    391,499.64/540,243.88 = 230,323.52/x
  3. Step 3: Cross multiply
    391,499.64x = 540,243.88 × 230,323.52
  4. Step 4: Simplify right side
    391,499.64x = 124,430,872,100.06
  5. Step 5: Solve for x
    x = 124,430,872,100.06/391,499.64
  6. Step 6: Final answer
    x = 317,831.38

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1.5x scale

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.