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Finding the Fourth Proportional to 521,329.12, 782,039.26 and 147,352.12

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Solution

The fourth proportional to 521,329.12, 782,039.26 and 147,352.12 is: 221,041.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,329.12 : 782,039.26 = 147,352.12 : x
  2. Step 2: Convert to fraction form
    521,329.12/782,039.26 = 147,352.12/x
  3. Step 3: Cross multiply
    521,329.12x = 782,039.26 × 147,352.12
  4. Step 4: Simplify right side
    521,329.12x = 115,235,142,884.23
  5. Step 5: Solve for x
    x = 115,235,142,884.23/521,329.12
  6. Step 6: Final answer
    x = 221,041.06

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1.5x scale

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.