Home / 315,964.65-436,031.34-172,724.67

Finding the Fourth Proportional to 315,964.65, 436,031.34 and 172,724.67

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Solution

The fourth proportional to 315,964.65, 436,031.34 and 172,724.67 is: 238,360.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,964.65 : 436,031.34 = 172,724.67 : x
  2. Step 2: Convert to fraction form
    315,964.65/436,031.34 = 172,724.67/x
  3. Step 3: Cross multiply
    315,964.65x = 436,031.34 × 172,724.67
  4. Step 4: Simplify right side
    315,964.65x = 75,313,369,311.16
  5. Step 5: Solve for x
    x = 75,313,369,311.16/315,964.65
  6. Step 6: Final answer
    x = 238,360.11

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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.