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Finding the Fourth Proportional to 316,710.72, 436,806 and 245,283.84

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Solution

The fourth proportional to 316,710.72, 436,806 and 245,283.84 is: 338,294.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,710.72 : 436,806 = 245,283.84 : x
  2. Step 2: Convert to fraction form
    316,710.72/436,806 = 245,283.84/x
  3. Step 3: Cross multiply
    316,710.72x = 436,806 × 245,283.84
  4. Step 4: Simplify right side
    316,710.72x = 107,141,453,015.04
  5. Step 5: Solve for x
    x = 107,141,453,015.04/316,710.72
  6. Step 6: Final answer
    x = 338,294.37

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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.