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Finding the Fourth Proportional to 457,263.72, 631,057.16 and 276,019.72

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Solution

The fourth proportional to 457,263.72, 631,057.16 and 276,019.72 is: 380,927.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,263.72 : 631,057.16 = 276,019.72 : x
  2. Step 2: Convert to fraction form
    457,263.72/631,057.16 = 276,019.72/x
  3. Step 3: Cross multiply
    457,263.72x = 631,057.16 × 276,019.72
  4. Step 4: Simplify right side
    457,263.72x = 174,184,220,607.20
  5. Step 5: Solve for x
    x = 174,184,220,607.20/457,263.72
  6. Step 6: Final answer
    x = 380,927.27

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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.