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Finding the Fourth Proportional to 307,173.50, 423,901.40 and 171,216.08

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Solution

The fourth proportional to 307,173.50, 423,901.40 and 171,216.08 is: 236,279.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,173.50 : 423,901.40 = 171,216.08 : x
  2. Step 2: Convert to fraction form
    307,173.50/423,901.40 = 171,216.08/x
  3. Step 3: Cross multiply
    307,173.50x = 423,901.40 × 171,216.08
  4. Step 4: Simplify right side
    307,173.50x = 72,578,733,895.01
  5. Step 5: Solve for x
    x = 72,578,733,895.01/307,173.50
  6. Step 6: Final answer
    x = 236,279.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.