Home / 389,760.16-537,868.72-210,912.16

Finding the Fourth Proportional to 389,760.16, 537,868.72 and 210,912.16

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Solution

The fourth proportional to 389,760.16, 537,868.72 and 210,912.16 is: 291,058.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,760.16 : 537,868.72 = 210,912.16 : x
  2. Step 2: Convert to fraction form
    389,760.16/537,868.72 = 210,912.16/x
  3. Step 3: Cross multiply
    389,760.16x = 537,868.72 × 210,912.16
  4. Step 4: Simplify right side
    389,760.16x = 113,443,053,531.64
  5. Step 5: Solve for x
    x = 113,443,053,531.64/389,760.16
  6. Step 6: Final answer
    x = 291,058.62

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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.