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Finding the Fourth Proportional to 210,357.46, 290,316.18 and 129,782.98

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Solution

The fourth proportional to 210,357.46, 290,316.18 and 129,782.98 is: 179,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,357.46 : 290,316.18 = 129,782.98 : x
  2. Step 2: Convert to fraction form
    210,357.46/290,316.18 = 129,782.98/x
  3. Step 3: Cross multiply
    210,357.46x = 290,316.18 × 129,782.98
  4. Step 4: Simplify right side
    210,357.46x = 37,678,098,982.62
  5. Step 5: Solve for x
    x = 37,678,098,982.62/210,357.46
  6. Step 6: Final answer
    x = 179,114.63

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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.