Home / 210,485.12-290,468.40-114,997.28

Finding the Fourth Proportional to 210,485.12, 290,468.40 and 114,997.28

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Solution

The fourth proportional to 210,485.12, 290,468.40 and 114,997.28 is: 158,695.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,485.12 : 290,468.40 = 114,997.28 : x
  2. Step 2: Convert to fraction form
    210,485.12/290,468.40 = 114,997.28/x
  3. Step 3: Cross multiply
    210,485.12x = 290,468.40 × 114,997.28
  4. Step 4: Simplify right side
    210,485.12x = 33,403,075,925.95
  5. Step 5: Solve for x
    x = 33,403,075,925.95/210,485.12
  6. Step 6: Final answer
    x = 158,695.66

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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.