Home / 428,170.07-642,315.56-175,487.13

Finding the Fourth Proportional to 428,170.07, 642,315.56 and 175,487.13

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Solution

The fourth proportional to 428,170.07, 642,315.56 and 175,487.13 is: 263,255.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,170.07 : 642,315.56 = 175,487.13 : x
  2. Step 2: Convert to fraction form
    428,170.07/642,315.56 = 175,487.13/x
  3. Step 3: Cross multiply
    428,170.07x = 642,315.56 × 175,487.13
  4. Step 4: Simplify right side
    428,170.07x = 112,718,113,301.31
  5. Step 5: Solve for x
    x = 112,718,113,301.31/428,170.07
  6. Step 6: Final answer
    x = 263,255.47

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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.