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Finding the Fourth Proportional to 210,626.04, 315,955.36 and 70,385.16

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Solution

The fourth proportional to 210,626.04, 315,955.36 and 70,385.16 is: 105,583.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,626.04 : 315,955.36 = 70,385.16 : x
  2. Step 2: Convert to fraction form
    210,626.04/315,955.36 = 70,385.16/x
  3. Step 3: Cross multiply
    210,626.04x = 315,955.36 × 70,385.16
  4. Step 4: Simplify right side
    210,626.04x = 22,238,568,566.46
  5. Step 5: Solve for x
    x = 22,238,568,566.46/210,626.04
  6. Step 6: Final answer
    x = 105,583.19

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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.