Home / 210,431.61-290,500.37-129,903.53

Finding the Fourth Proportional to 210,431.61, 290,500.37 and 129,903.53

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Solution

The fourth proportional to 210,431.61, 290,500.37 and 129,903.53 is: 179,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,431.61 : 290,500.37 = 129,903.53 : x
  2. Step 2: Convert to fraction form
    210,431.61/290,500.37 = 129,903.53/x
  3. Step 3: Cross multiply
    210,431.61x = 290,500.37 × 129,903.53
  4. Step 4: Simplify right side
    210,431.61x = 37,737,021,427.29
  5. Step 5: Solve for x
    x = 37,737,021,427.29/210,431.61
  6. Step 6: Final answer
    x = 179,331.52

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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.