Home / 307,115.27-423,813.32-171,146.23

Finding the Fourth Proportional to 307,115.27, 423,813.32 and 171,146.23

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Solution

The fourth proportional to 307,115.27, 423,813.32 and 171,146.23 is: 236,178.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,115.27 : 423,813.32 = 171,146.23 : x
  2. Step 2: Convert to fraction form
    307,115.27/423,813.32 = 171,146.23/x
  3. Step 3: Cross multiply
    307,115.27x = 423,813.32 × 171,146.23
  4. Step 4: Simplify right side
    307,115.27x = 72,534,048,966.99
  5. Step 5: Solve for x
    x = 72,534,048,966.99/307,115.27
  6. Step 6: Final answer
    x = 236,178.58

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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.