Home / 388,918.58-583,396.40-189,000.79

Finding the Fourth Proportional to 388,918.58, 583,396.40 and 189,000.79

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Solution

The fourth proportional to 388,918.58, 583,396.40 and 189,000.79 is: 283,510.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,918.58 : 583,396.40 = 189,000.79 : x
  2. Step 2: Convert to fraction form
    388,918.58/583,396.40 = 189,000.79/x
  3. Step 3: Cross multiply
    388,918.58x = 583,396.40 × 189,000.79
  4. Step 4: Simplify right side
    388,918.58x = 110,262,379,497.17
  5. Step 5: Solve for x
    x = 110,262,379,497.17/388,918.58
  6. Step 6: Final answer
    x = 283,510.19

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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.