Home / 388,430.12-582,647.04-135,709.52

Finding the Fourth Proportional to 388,430.12, 582,647.04 and 135,709.52

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Solution

The fourth proportional to 388,430.12, 582,647.04 and 135,709.52 is: 203,564.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,430.12 : 582,647.04 = 135,709.52 : x
  2. Step 2: Convert to fraction form
    388,430.12/582,647.04 = 135,709.52/x
  3. Step 3: Cross multiply
    388,430.12x = 582,647.04 × 135,709.52
  4. Step 4: Simplify right side
    388,430.12x = 79,070,750,127.82
  5. Step 5: Solve for x
    x = 79,070,750,127.82/388,430.12
  6. Step 6: Final answer
    x = 203,564.93

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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.