Home / 307,316.87-423,132.20-261,285.98

Finding the Fourth Proportional to 307,316.87, 423,132.20 and 261,285.98

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Solution

The fourth proportional to 307,316.87, 423,132.20 and 261,285.98 is: 359,754.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,316.87 : 423,132.20 = 261,285.98 : x
  2. Step 2: Convert to fraction form
    307,316.87/423,132.20 = 261,285.98/x
  3. Step 3: Cross multiply
    307,316.87x = 423,132.20 × 261,285.98
  4. Step 4: Simplify right side
    307,316.87x = 110,558,513,257.60
  5. Step 5: Solve for x
    x = 110,558,513,257.60/307,316.87
  6. Step 6: Final answer
    x = 359,754.14

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1.5x scale

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.