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Finding the Fourth Proportional to 352,875.72, 486,939.42 and 209,672.04

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Solution

The fourth proportional to 352,875.72, 486,939.42 and 209,672.04 is: 289,330.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,875.72 : 486,939.42 = 209,672.04 : x
  2. Step 2: Convert to fraction form
    352,875.72/486,939.42 = 209,672.04/x
  3. Step 3: Cross multiply
    352,875.72x = 486,939.42 × 209,672.04
  4. Step 4: Simplify right side
    352,875.72x = 102,097,581,547.82
  5. Step 5: Solve for x
    x = 102,097,581,547.82/352,875.72
  6. Step 6: Final answer
    x = 289,330.14

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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.