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Finding the Fourth Proportional to 307,995.19, 425,028.88 and 172,031.07

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Solution

The fourth proportional to 307,995.19, 425,028.88 and 172,031.07 is: 237,400.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,995.19 : 425,028.88 = 172,031.07 : x
  2. Step 2: Convert to fraction form
    307,995.19/425,028.88 = 172,031.07/x
  3. Step 3: Cross multiply
    307,995.19x = 425,028.88 × 172,031.07
  4. Step 4: Simplify right side
    307,995.19x = 73,118,172,577.22
  5. Step 5: Solve for x
    x = 73,118,172,577.22/307,995.19
  6. Step 6: Final answer
    x = 237,400.37

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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.