Home / 487,020.21-672,085.92-272,160.21

Finding the Fourth Proportional to 487,020.21, 672,085.92 and 272,160.21

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Solution

The fourth proportional to 487,020.21, 672,085.92 and 272,160.21 is: 375,580.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,020.21 : 672,085.92 = 272,160.21 : x
  2. Step 2: Convert to fraction form
    487,020.21/672,085.92 = 272,160.21/x
  3. Step 3: Cross multiply
    487,020.21x = 672,085.92 × 272,160.21
  4. Step 4: Simplify right side
    487,020.21x = 182,915,048,666.17
  5. Step 5: Solve for x
    x = 182,915,048,666.17/487,020.21
  6. Step 6: Final answer
    x = 375,580.00

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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.