Home / 427,027.46-640,607.63-142,629.98

Finding the Fourth Proportional to 427,027.46, 640,607.63 and 142,629.98

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Solution

The fourth proportional to 427,027.46, 640,607.63 and 142,629.98 is: 213,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,027.46 : 640,607.63 = 142,629.98 : x
  2. Step 2: Convert to fraction form
    427,027.46/640,607.63 = 142,629.98/x
  3. Step 3: Cross multiply
    427,027.46x = 640,607.63 × 142,629.98
  4. Step 4: Simplify right side
    427,027.46x = 91,369,849,538.56
  5. Step 5: Solve for x
    x = 91,369,849,538.56/427,027.46
  6. Step 6: Final answer
    x = 213,967.15

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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.