Home / 211,911.04-317,859.36-99,528.40

Finding the Fourth Proportional to 211,911.04, 317,859.36 and 99,528.40

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Solution

The fourth proportional to 211,911.04, 317,859.36 and 99,528.40 is: 149,289.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,911.04 : 317,859.36 = 99,528.40 : x
  2. Step 2: Convert to fraction form
    211,911.04/317,859.36 = 99,528.40/x
  3. Step 3: Cross multiply
    211,911.04x = 317,859.36 × 99,528.40
  4. Step 4: Simplify right side
    211,911.04x = 31,636,033,525.82
  5. Step 5: Solve for x
    x = 31,636,033,525.82/211,911.04
  6. Step 6: Final answer
    x = 149,289.22

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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.