Home / 628,438.10-942,644.39-155,127.56

Finding the Fourth Proportional to 628,438.10, 942,644.39 and 155,127.56

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Solution

The fourth proportional to 628,438.10, 942,644.39 and 155,127.56 is: 232,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,438.10 : 942,644.39 = 155,127.56 : x
  2. Step 2: Convert to fraction form
    628,438.10/942,644.39 = 155,127.56/x
  3. Step 3: Cross multiply
    628,438.10x = 942,644.39 × 155,127.56
  4. Step 4: Simplify right side
    628,438.10x = 146,230,118,679.53
  5. Step 5: Solve for x
    x = 146,230,118,679.53/628,438.10
  6. Step 6: Final answer
    x = 232,688.18

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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.