Home / 390,217.95-585,660.24-278,172.27

Finding the Fourth Proportional to 390,217.95, 585,660.24 and 278,172.27

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Solution

The fourth proportional to 390,217.95, 585,660.24 and 278,172.27 is: 417,496.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,217.95 : 585,660.24 = 278,172.27 : x
  2. Step 2: Convert to fraction form
    390,217.95/585,660.24 = 278,172.27/x
  3. Step 3: Cross multiply
    390,217.95x = 585,660.24 × 278,172.27
  4. Step 4: Simplify right side
    390,217.95x = 162,914,438,409.55
  5. Step 5: Solve for x
    x = 162,914,438,409.55/390,217.95
  6. Step 6: Final answer
    x = 417,496.01

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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.