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Finding the Fourth Proportional to 352,312.65, 486,317.54 and 209,072.68

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Solution

The fourth proportional to 352,312.65, 486,317.54 and 209,072.68 is: 288,595.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,312.65 : 486,317.54 = 209,072.68 : x
  2. Step 2: Convert to fraction form
    352,312.65/486,317.54 = 209,072.68/x
  3. Step 3: Cross multiply
    352,312.65x = 486,317.54 × 209,072.68
  4. Step 4: Simplify right side
    352,312.65x = 101,675,711,418.81
  5. Step 5: Solve for x
    x = 101,675,711,418.81/352,312.65
  6. Step 6: Final answer
    x = 288,595.12

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1.5x scale

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.