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Finding the Fourth Proportional to 210,925.76, 291,049.44 and 121,484.48

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Solution

The fourth proportional to 210,925.76, 291,049.44 and 121,484.48 is: 167,632.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,925.76 : 291,049.44 = 121,484.48 : x
  2. Step 2: Convert to fraction form
    210,925.76/291,049.44 = 121,484.48/x
  3. Step 3: Cross multiply
    210,925.76x = 291,049.44 × 121,484.48
  4. Step 4: Simplify right side
    210,925.76x = 35,357,989,872.69
  5. Step 5: Solve for x
    x = 35,357,989,872.69/210,925.76
  6. Step 6: Final answer
    x = 167,632.39

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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.