Home / 207,619.10-311,428.65-170,221.40

Finding the Fourth Proportional to 207,619.10, 311,428.65 and 170,221.40

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Solution

The fourth proportional to 207,619.10, 311,428.65 and 170,221.40 is: 255,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,619.10 : 311,428.65 = 170,221.40 : x
  2. Step 2: Convert to fraction form
    207,619.10/311,428.65 = 170,221.40/x
  3. Step 3: Cross multiply
    207,619.10x = 311,428.65 × 170,221.40
  4. Step 4: Simplify right side
    207,619.10x = 53,011,820,803.11
  5. Step 5: Solve for x
    x = 53,011,820,803.11/207,619.10
  6. Step 6: Final answer
    x = 255,332.10

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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.