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Finding the Fourth Proportional to 370,765.88, 511,660.94 and 217,810.51

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Solution

The fourth proportional to 370,765.88, 511,660.94 and 217,810.51 is: 300,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,765.88 : 511,660.94 = 217,810.51 : x
  2. Step 2: Convert to fraction form
    370,765.88/511,660.94 = 217,810.51/x
  3. Step 3: Cross multiply
    370,765.88x = 511,660.94 × 217,810.51
  4. Step 4: Simplify right side
    370,765.88x = 111,445,130,288.48
  5. Step 5: Solve for x
    x = 111,445,130,288.48/370,765.88
  6. Step 6: Final answer
    x = 300,580.87

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1.5x scale

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.