Home / 487,047.28-672,155.09-272,204.50

Finding the Fourth Proportional to 487,047.28, 672,155.09 and 272,204.50

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Solution

The fourth proportional to 487,047.28, 672,155.09 and 272,204.50 is: 375,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,047.28 : 672,155.09 = 272,204.50 : x
  2. Step 2: Convert to fraction form
    487,047.28/672,155.09 = 272,204.50/x
  3. Step 3: Cross multiply
    487,047.28x = 672,155.09 × 272,204.50
  4. Step 4: Simplify right side
    487,047.28x = 182,963,638,669.98
  5. Step 5: Solve for x
    x = 182,963,638,669.98/487,047.28
  6. Step 6: Final answer
    x = 375,658.89

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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.