Home / 692,135.20-1,038,008.40-218,965.60

Finding the Fourth Proportional to 692,135.20, 1,038,008.40 and 218,965.60

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Solution

The fourth proportional to 692,135.20, 1,038,008.40 and 218,965.60 is: 328,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,135.20 : 1,038,008.40 = 218,965.60 : x
  2. Step 2: Convert to fraction form
    692,135.20/1,038,008.40 = 218,965.60/x
  3. Step 3: Cross multiply
    692,135.20x = 1,038,008.40 × 218,965.60
  4. Step 4: Simplify right side
    692,135.20x = 227,288,132,111.04
  5. Step 5: Solve for x
    x = 227,288,132,111.04/692,135.20
  6. Step 6: Final answer
    x = 328,386.90

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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.