Home / 385,477.45-531,449.20-316,313.57

Finding the Fourth Proportional to 385,477.45, 531,449.20 and 316,313.57

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Solution

The fourth proportional to 385,477.45, 531,449.20 and 316,313.57 is: 436,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,477.45 : 531,449.20 = 316,313.57 : x
  2. Step 2: Convert to fraction form
    385,477.45/531,449.20 = 316,313.57/x
  3. Step 3: Cross multiply
    385,477.45x = 531,449.20 × 316,313.57
  4. Step 4: Simplify right side
    385,477.45x = 168,104,595,449.66
  5. Step 5: Solve for x
    x = 168,104,595,449.66/385,477.45
  6. Step 6: Final answer
    x = 436,094.50

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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.