Home / 521,341.12-782,055.42-166,405.60

Finding the Fourth Proportional to 521,341.12, 782,055.42 and 166,405.60

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Solution

The fourth proportional to 521,341.12, 782,055.42 and 166,405.60 is: 249,622.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,341.12 : 782,055.42 = 166,405.60 : x
  2. Step 2: Convert to fraction form
    521,341.12/782,055.42 = 166,405.60/x
  3. Step 3: Cross multiply
    521,341.12x = 782,055.42 × 166,405.60
  4. Step 4: Simplify right side
    521,341.12x = 130,138,401,398.35
  5. Step 5: Solve for x
    x = 130,138,401,398.35/521,341.12
  6. Step 6: Final answer
    x = 249,622.36

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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.