Home / 253,023.98-349,172.79-138,303.38

Finding the Fourth Proportional to 253,023.98, 349,172.79 and 138,303.38

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Solution

The fourth proportional to 253,023.98, 349,172.79 and 138,303.38 is: 190,858.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,023.98 : 349,172.79 = 138,303.38 : x
  2. Step 2: Convert to fraction form
    253,023.98/349,172.79 = 138,303.38/x
  3. Step 3: Cross multiply
    253,023.98x = 349,172.79 × 138,303.38
  4. Step 4: Simplify right side
    253,023.98x = 48,291,777,061.03
  5. Step 5: Solve for x
    x = 48,291,777,061.03/253,023.98
  6. Step 6: Final answer
    x = 190,858.50

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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.