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Finding the Fourth Proportional to 210,902.92, 316,289.28 and 61,154.25

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Solution

The fourth proportional to 210,902.92, 316,289.28 and 61,154.25 is: 91,712.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,902.92 : 316,289.28 = 61,154.25 : x
  2. Step 2: Convert to fraction form
    210,902.92/316,289.28 = 61,154.25/x
  3. Step 3: Cross multiply
    210,902.92x = 316,289.28 × 61,154.25
  4. Step 4: Simplify right side
    210,902.92x = 19,342,431,814.22
  5. Step 5: Solve for x
    x = 19,342,431,814.22/210,902.92
  6. Step 6: Final answer
    x = 91,712.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.