Home / 210,543.36-290,630.40-129,984

Finding the Fourth Proportional to 210,543.36, 290,630.40 and 129,984

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Solution

The fourth proportional to 210,543.36, 290,630.40 and 129,984 is: 179,427.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,543.36 : 290,630.40 = 129,984 : x
  2. Step 2: Convert to fraction form
    210,543.36/290,630.40 = 129,984/x
  3. Step 3: Cross multiply
    210,543.36x = 290,630.40 × 129,984
  4. Step 4: Simplify right side
    210,543.36x = 37,777,301,913.60
  5. Step 5: Solve for x
    x = 37,777,301,913.60/210,543.36
  6. Step 6: Final answer
    x = 179,427.66

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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.