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Finding the Fourth Proportional to 313,632.45, 432,810.45 and 170,393.67

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Solution

The fourth proportional to 313,632.45, 432,810.45 and 170,393.67 is: 235,142.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,632.45 : 432,810.45 = 170,393.67 : x
  2. Step 2: Convert to fraction form
    313,632.45/432,810.45 = 170,393.67/x
  3. Step 3: Cross multiply
    313,632.45x = 432,810.45 × 170,393.67
  4. Step 4: Simplify right side
    313,632.45x = 73,748,160,989.85
  5. Step 5: Solve for x
    x = 73,748,160,989.85/313,632.45
  6. Step 6: Final answer
    x = 235,142.00

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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.