Home / 389,918.40-584,877.60-238,359.30

Finding the Fourth Proportional to 389,918.40, 584,877.60 and 238,359.30

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Solution

The fourth proportional to 389,918.40, 584,877.60 and 238,359.30 is: 357,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,918.40 : 584,877.60 = 238,359.30 : x
  2. Step 2: Convert to fraction form
    389,918.40/584,877.60 = 238,359.30/x
  3. Step 3: Cross multiply
    389,918.40x = 584,877.60 × 238,359.30
  4. Step 4: Simplify right side
    389,918.40x = 139,411,015,321.68
  5. Step 5: Solve for x
    x = 139,411,015,321.68/389,918.40
  6. Step 6: Final answer
    x = 357,538.95

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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.