Home / 260,460.15-390,690.23-213,220.95

Finding the Fourth Proportional to 260,460.15, 390,690.23 and 213,220.95

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Solution

The fourth proportional to 260,460.15, 390,690.23 and 213,220.95 is: 319,831.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,460.15 : 390,690.23 = 213,220.95 : x
  2. Step 2: Convert to fraction form
    260,460.15/390,690.23 = 213,220.95/x
  3. Step 3: Cross multiply
    260,460.15x = 390,690.23 × 213,220.95
  4. Step 4: Simplify right side
    260,460.15x = 83,303,340,930.21
  5. Step 5: Solve for x
    x = 83,303,340,930.21/260,460.15
  6. Step 6: Final answer
    x = 319,831.43

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1.5x scale

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.