Home / 521,128.22-719,269.01-317,246.36

Finding the Fourth Proportional to 521,128.22, 719,269.01 and 317,246.36

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Solution

The fourth proportional to 521,128.22, 719,269.01 and 317,246.36 is: 437,868.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,128.22 : 719,269.01 = 317,246.36 : x
  2. Step 2: Convert to fraction form
    521,128.22/719,269.01 = 317,246.36/x
  3. Step 3: Cross multiply
    521,128.22x = 719,269.01 × 317,246.36
  4. Step 4: Simplify right side
    521,128.22x = 228,185,473,074.91
  5. Step 5: Solve for x
    x = 228,185,473,074.91/521,128.22
  6. Step 6: Final answer
    x = 437,868.20

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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.