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Finding the Fourth Proportional to 210,328.71, 315,173.84 and 154,206.18

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Solution

The fourth proportional to 210,328.71, 315,173.84 and 154,206.18 is: 231,075.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,328.71 : 315,173.84 = 154,206.18 : x
  2. Step 2: Convert to fraction form
    210,328.71/315,173.84 = 154,206.18/x
  3. Step 3: Cross multiply
    210,328.71x = 315,173.84 × 154,206.18
  4. Step 4: Simplify right side
    210,328.71x = 48,601,753,131.30
  5. Step 5: Solve for x
    x = 48,601,753,131.30/210,328.71
  6. Step 6: Final answer
    x = 231,075.22

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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.