Home / 259,266.40-388,834.80-99,307.60

Finding the Fourth Proportional to 259,266.40, 388,834.80 and 99,307.60

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Solution

The fourth proportional to 259,266.40, 388,834.80 and 99,307.60 is: 148,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,266.40 : 388,834.80 = 99,307.60 : x
  2. Step 2: Convert to fraction form
    259,266.40/388,834.80 = 99,307.60/x
  3. Step 3: Cross multiply
    259,266.40x = 388,834.80 × 99,307.60
  4. Step 4: Simplify right side
    259,266.40x = 38,614,250,784.48
  5. Step 5: Solve for x
    x = 38,614,250,784.48/259,266.40
  6. Step 6: Final answer
    x = 148,936.58

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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.