Home / 210,054.20-315,311.70-131,257.40

Finding the Fourth Proportional to 210,054.20, 315,311.70 and 131,257.40

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Solution

The fourth proportional to 210,054.20, 315,311.70 and 131,257.40 is: 197,030.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,054.20 : 315,311.70 = 131,257.40 : x
  2. Step 2: Convert to fraction form
    210,054.20/315,311.70 = 131,257.40/x
  3. Step 3: Cross multiply
    210,054.20x = 315,311.70 × 131,257.40
  4. Step 4: Simplify right side
    210,054.20x = 41,386,993,931.58
  5. Step 5: Solve for x
    x = 41,386,993,931.58/210,054.20
  6. Step 6: Final answer
    x = 197,030.07

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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.