Home / 428,742.78-591,661.71-237,756.66

Finding the Fourth Proportional to 428,742.78, 591,661.71 and 237,756.66

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Solution

The fourth proportional to 428,742.78, 591,661.71 and 237,756.66 is: 328,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,742.78 : 591,661.71 = 237,756.66 : x
  2. Step 2: Convert to fraction form
    428,742.78/591,661.71 = 237,756.66/x
  3. Step 3: Cross multiply
    428,742.78x = 591,661.71 × 237,756.66
  4. Step 4: Simplify right side
    428,742.78x = 140,671,512,019.49
  5. Step 5: Solve for x
    x = 140,671,512,019.49/428,742.78
  6. Step 6: Final answer
    x = 328,102.35

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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.