Home / 389,919.02-538,089.93-211,071.02

Finding the Fourth Proportional to 389,919.02, 538,089.93 and 211,071.02

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Solution

The fourth proportional to 389,919.02, 538,089.93 and 211,071.02 is: 291,278.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,919.02 : 538,089.93 = 211,071.02 : x
  2. Step 2: Convert to fraction form
    389,919.02/538,089.93 = 211,071.02/x
  3. Step 3: Cross multiply
    389,919.02x = 538,089.93 × 211,071.02
  4. Step 4: Simplify right side
    389,919.02x = 113,575,190,376.83
  5. Step 5: Solve for x
    x = 113,575,190,376.83/389,919.02
  6. Step 6: Final answer
    x = 291,278.92

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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.