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Finding the Fourth Proportional to 210,274.92, 315,404.15 and 70,033.55

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Solution

The fourth proportional to 210,274.92, 315,404.15 and 70,033.55 is: 105,047.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,274.92 : 315,404.15 = 70,033.55 : x
  2. Step 2: Convert to fraction form
    210,274.92/315,404.15 = 70,033.55/x
  3. Step 3: Cross multiply
    210,274.92x = 315,404.15 × 70,033.55
  4. Step 4: Simplify right side
    210,274.92x = 22,088,870,382.04
  5. Step 5: Solve for x
    x = 22,088,870,382.04/210,274.92
  6. Step 6: Final answer
    x = 105,047.57

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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.