Home / 389,043.09-536,868.77-216,966.29

Finding the Fourth Proportional to 389,043.09, 536,868.77 and 216,966.29

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Solution

The fourth proportional to 389,043.09, 536,868.77 and 216,966.29 is: 299,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,043.09 : 536,868.77 = 216,966.29 : x
  2. Step 2: Convert to fraction form
    389,043.09/536,868.77 = 216,966.29/x
  3. Step 3: Cross multiply
    389,043.09x = 536,868.77 × 216,966.29
  4. Step 4: Simplify right side
    389,043.09x = 116,482,421,474.59
  5. Step 5: Solve for x
    x = 116,482,421,474.59/389,043.09
  6. Step 6: Final answer
    x = 299,407.51

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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.