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Finding the Fourth Proportional to 317,033.43, 437,645.76 and 221,913.51

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Solution

The fourth proportional to 317,033.43, 437,645.76 and 221,913.51 is: 306,338.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,033.43 : 437,645.76 = 221,913.51 : x
  2. Step 2: Convert to fraction form
    317,033.43/437,645.76 = 221,913.51/x
  3. Step 3: Cross multiply
    317,033.43x = 437,645.76 × 221,913.51
  4. Step 4: Simplify right side
    317,033.43x = 97,119,506,738.22
  5. Step 5: Solve for x
    x = 97,119,506,738.22/317,033.43
  6. Step 6: Final answer
    x = 306,338.38

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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.