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Finding the Fourth Proportional to 370,729.51, 511,409.40 and 225,579.53

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Solution

The fourth proportional to 370,729.51, 511,409.40 and 225,579.53 is: 311,179.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,729.51 : 511,409.40 = 225,579.53 : x
  2. Step 2: Convert to fraction form
    370,729.51/511,409.40 = 225,579.53/x
  3. Step 3: Cross multiply
    370,729.51x = 511,409.40 × 225,579.53
  4. Step 4: Simplify right side
    370,729.51x = 115,363,492,522.18
  5. Step 5: Solve for x
    x = 115,363,492,522.18/370,729.51
  6. Step 6: Final answer
    x = 311,179.69

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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.