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Finding the Fourth Proportional to 317,813.68, 438,561.36 and 174,579.76

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Solution

The fourth proportional to 317,813.68, 438,561.36 and 174,579.76 is: 240,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,813.68 : 438,561.36 = 174,579.76 : x
  2. Step 2: Convert to fraction form
    317,813.68/438,561.36 = 174,579.76/x
  3. Step 3: Cross multiply
    317,813.68x = 438,561.36 × 174,579.76
  4. Step 4: Simplify right side
    317,813.68x = 76,563,936,974.07
  5. Step 5: Solve for x
    x = 76,563,936,974.07/317,813.68
  6. Step 6: Final answer
    x = 240,908.25

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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.