Home / 330,719.22-456,312.60-209,817

Finding the Fourth Proportional to 330,719.22, 456,312.60 and 209,817

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Solution

The fourth proportional to 330,719.22, 456,312.60 and 209,817 is: 289,496.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,719.22 : 456,312.60 = 209,817 : x
  2. Step 2: Convert to fraction form
    330,719.22/456,312.60 = 209,817/x
  3. Step 3: Cross multiply
    330,719.22x = 456,312.60 × 209,817
  4. Step 4: Simplify right side
    330,719.22x = 95,742,140,794.20
  5. Step 5: Solve for x
    x = 95,742,140,794.20/330,719.22
  6. Step 6: Final answer
    x = 289,496.75

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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.