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Finding the Fourth Proportional to 457,546.79, 631,430.78 and 276,223.32

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Solution

The fourth proportional to 457,546.79, 631,430.78 and 276,223.32 is: 381,197.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,546.79 : 631,430.78 = 276,223.32 : x
  2. Step 2: Convert to fraction form
    457,546.79/631,430.78 = 276,223.32/x
  3. Step 3: Cross multiply
    457,546.79x = 631,430.78 × 276,223.32
  4. Step 4: Simplify right side
    457,546.79x = 174,415,905,020.67
  5. Step 5: Solve for x
    x = 174,415,905,020.67/457,546.79
  6. Step 6: Final answer
    x = 381,197.96

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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.