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Finding the Fourth Proportional to 210,211.79, 290,098.68 and 119,580.89

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Solution

The fourth proportional to 210,211.79, 290,098.68 and 119,580.89 is: 165,025.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,211.79 : 290,098.68 = 119,580.89 : x
  2. Step 2: Convert to fraction form
    210,211.79/290,098.68 = 119,580.89/x
  3. Step 3: Cross multiply
    210,211.79x = 290,098.68 × 119,580.89
  4. Step 4: Simplify right side
    210,211.79x = 34,690,258,342.23
  5. Step 5: Solve for x
    x = 34,690,258,342.23/210,211.79
  6. Step 6: Final answer
    x = 165,025.27

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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.