Home / 210,420.27-315,631.61-70,178.49

Finding the Fourth Proportional to 210,420.27, 315,631.61 and 70,178.49

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Solution

The fourth proportional to 210,420.27, 315,631.61 and 70,178.49 is: 105,268.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,420.27 : 315,631.61 = 70,178.49 : x
  2. Step 2: Convert to fraction form
    210,420.27/315,631.61 = 70,178.49/x
  3. Step 3: Cross multiply
    210,420.27x = 315,631.61 × 70,178.49
  4. Step 4: Simplify right side
    210,420.27x = 22,150,549,435.18
  5. Step 5: Solve for x
    x = 22,150,549,435.18/210,420.27
  6. Step 6: Final answer
    x = 105,268.14

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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.