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Finding the Fourth Proportional to 317,091.51, 437,606.55 and 209,472.89

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Solution

The fourth proportional to 317,091.51, 437,606.55 and 209,472.89 is: 289,085.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,091.51 : 437,606.55 = 209,472.89 : x
  2. Step 2: Convert to fraction form
    317,091.51/437,606.55 = 209,472.89/x
  3. Step 3: Cross multiply
    317,091.51x = 437,606.55 × 209,472.89
  4. Step 4: Simplify right side
    317,091.51x = 91,666,706,523.40
  5. Step 5: Solve for x
    x = 91,666,706,523.40/317,091.51
  6. Step 6: Final answer
    x = 289,085.97

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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.