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Finding the Fourth Proportional to 392,124.81, 540,699.99 and 271,055.91

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Solution

The fourth proportional to 392,124.81, 540,699.99 and 271,055.91 is: 373,758.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,124.81 : 540,699.99 = 271,055.91 : x
  2. Step 2: Convert to fraction form
    392,124.81/540,699.99 = 271,055.91/x
  3. Step 3: Cross multiply
    392,124.81x = 540,699.99 × 271,055.91
  4. Step 4: Simplify right side
    392,124.81x = 146,559,927,826.44
  5. Step 5: Solve for x
    x = 146,559,927,826.44/392,124.81
  6. Step 6: Final answer
    x = 373,758.36

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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.