Home / 210,318.60-315,528.12-70,078.44

Finding the Fourth Proportional to 210,318.60, 315,528.12 and 70,078.44

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Solution

The fourth proportional to 210,318.60, 315,528.12 and 70,078.44 is: 105,134.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,318.60 : 315,528.12 = 70,078.44 : x
  2. Step 2: Convert to fraction form
    210,318.60/315,528.12 = 70,078.44/x
  3. Step 3: Cross multiply
    210,318.60x = 315,528.12 × 70,078.44
  4. Step 4: Simplify right side
    210,318.60x = 22,111,718,425.73
  5. Step 5: Solve for x
    x = 22,111,718,425.73/210,318.60
  6. Step 6: Final answer
    x = 105,134.39

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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.