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Finding the Fourth Proportional to 328,758.72, 453,673.44 and 207,965.76

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Solution

The fourth proportional to 328,758.72, 453,673.44 and 207,965.76 is: 286,984.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,758.72 : 453,673.44 = 207,965.76 : x
  2. Step 2: Convert to fraction form
    328,758.72/453,673.44 = 207,965.76/x
  3. Step 3: Cross multiply
    328,758.72x = 453,673.44 × 207,965.76
  4. Step 4: Simplify right side
    328,758.72x = 94,348,541,741.41
  5. Step 5: Solve for x
    x = 94,348,541,741.41/328,758.72
  6. Step 6: Final answer
    x = 286,984.15

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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.