Home / 463,913.60-640,189.92-272,939.28

Finding the Fourth Proportional to 463,913.60, 640,189.92 and 272,939.28

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Solution

The fourth proportional to 463,913.60, 640,189.92 and 272,939.28 is: 376,649.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,913.60 : 640,189.92 = 272,939.28 : x
  2. Step 2: Convert to fraction form
    463,913.60/640,189.92 = 272,939.28/x
  3. Step 3: Cross multiply
    463,913.60x = 640,189.92 × 272,939.28
  4. Step 4: Simplify right side
    463,913.60x = 174,732,975,828.06
  5. Step 5: Solve for x
    x = 174,732,975,828.06/463,913.60
  6. Step 6: Final answer
    x = 376,649.82

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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.