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Finding the Fourth Proportional to 212,525.79, 317,130.98 and 193,662.91

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Solution

The fourth proportional to 212,525.79, 317,130.98 and 193,662.91 is: 288,983.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,525.79 : 317,130.98 = 193,662.91 : x
  2. Step 2: Convert to fraction form
    212,525.79/317,130.98 = 193,662.91/x
  3. Step 3: Cross multiply
    212,525.79x = 317,130.98 × 193,662.91
  4. Step 4: Simplify right side
    212,525.79x = 61,416,508,437.95
  5. Step 5: Solve for x
    x = 61,416,508,437.95/212,525.79
  6. Step 6: Final answer
    x = 288,983.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.