Home / 357,986.78-493,527.54-285,635.35

Finding the Fourth Proportional to 357,986.78, 493,527.54 and 285,635.35

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Solution

The fourth proportional to 357,986.78, 493,527.54 and 285,635.35 is: 393,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,986.78 : 493,527.54 = 285,635.35 : x
  2. Step 2: Convert to fraction form
    357,986.78/493,527.54 = 285,635.35/x
  3. Step 3: Cross multiply
    357,986.78x = 493,527.54 × 285,635.35
  4. Step 4: Simplify right side
    357,986.78x = 140,968,911,622.54
  5. Step 5: Solve for x
    x = 140,968,911,622.54/357,986.78
  6. Step 6: Final answer
    x = 393,782.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.