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Finding the Fourth Proportional to 210,317.60, 290,234.48 and 119,671.60

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Solution

The fourth proportional to 210,317.60, 290,234.48 and 119,671.60 is: 165,144.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,317.60 : 290,234.48 = 119,671.60 : x
  2. Step 2: Convert to fraction form
    210,317.60/290,234.48 = 119,671.60/x
  3. Step 3: Cross multiply
    210,317.60x = 290,234.48 × 119,671.60
  4. Step 4: Simplify right side
    210,317.60x = 34,732,824,596.77
  5. Step 5: Solve for x
    x = 34,732,824,596.77/210,317.60
  6. Step 6: Final answer
    x = 165,144.64

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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.