Home / 428,777.43-643,263.18-144,460.25

Finding the Fourth Proportional to 428,777.43, 643,263.18 and 144,460.25

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Solution

The fourth proportional to 428,777.43, 643,263.18 and 144,460.25 is: 216,723.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,777.43 : 643,263.18 = 144,460.25 : x
  2. Step 2: Convert to fraction form
    428,777.43/643,263.18 = 144,460.25/x
  3. Step 3: Cross multiply
    428,777.43x = 643,263.18 × 144,460.25
  4. Step 4: Simplify right side
    428,777.43x = 92,925,962,477.44
  5. Step 5: Solve for x
    x = 92,925,962,477.44/428,777.43
  6. Step 6: Final answer
    x = 216,723.07

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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.