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Finding the Fourth Proportional to 210,594.76, 316,039.74 and 121,726

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Solution

The fourth proportional to 210,594.76, 316,039.74 and 121,726 is: 182,674.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,594.76 : 316,039.74 = 121,726 : x
  2. Step 2: Convert to fraction form
    210,594.76/316,039.74 = 121,726/x
  3. Step 3: Cross multiply
    210,594.76x = 316,039.74 × 121,726
  4. Step 4: Simplify right side
    210,594.76x = 38,470,253,391.24
  5. Step 5: Solve for x
    x = 38,470,253,391.24/210,594.76
  6. Step 6: Final answer
    x = 182,674.31

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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.