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Finding the Fourth Proportional to 210,373.41, 290,338.16 and 129,798.87

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Solution

The fourth proportional to 210,373.41, 290,338.16 and 129,798.87 is: 179,136.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,373.41 : 290,338.16 = 129,798.87 : x
  2. Step 2: Convert to fraction form
    210,373.41/290,338.16 = 129,798.87/x
  3. Step 3: Cross multiply
    210,373.41x = 290,338.16 × 129,798.87
  4. Step 4: Simplify right side
    210,373.41x = 37,685,565,085.88
  5. Step 5: Solve for x
    x = 37,685,565,085.88/210,373.41
  6. Step 6: Final answer
    x = 179,136.54

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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.