Home / 211,775.36-317,569.79-99,487.49

Finding the Fourth Proportional to 211,775.36, 317,569.79 and 99,487.49

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Solution

The fourth proportional to 211,775.36, 317,569.79 and 99,487.49 is: 149,187.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,775.36 : 317,569.79 = 99,487.49 : x
  2. Step 2: Convert to fraction form
    211,775.36/317,569.79 = 99,487.49/x
  3. Step 3: Cross multiply
    211,775.36x = 317,569.79 × 99,487.49
  4. Step 4: Simplify right side
    211,775.36x = 31,594,221,474.32
  5. Step 5: Solve for x
    x = 31,594,221,474.32/211,775.36
  6. Step 6: Final answer
    x = 149,187.43

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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.