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Finding the Fourth Proportional to 211,628.40, 317,474.76 and 69,426.48

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Solution

The fourth proportional to 211,628.40, 317,474.76 and 69,426.48 is: 104,150.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,628.40 : 317,474.76 = 69,426.48 : x
  2. Step 2: Convert to fraction form
    211,628.40/317,474.76 = 69,426.48/x
  3. Step 3: Cross multiply
    211,628.40x = 317,474.76 × 69,426.48
  4. Step 4: Simplify right side
    211,628.40x = 22,041,155,075.64
  5. Step 5: Solve for x
    x = 22,041,155,075.64/211,628.40
  6. Step 6: Final answer
    x = 104,150.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.