Home / 385,356.48-531,782.56-215,606.72

Finding the Fourth Proportional to 385,356.48, 531,782.56 and 215,606.72

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Solution

The fourth proportional to 385,356.48, 531,782.56 and 215,606.72 is: 297,532.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,356.48 : 531,782.56 = 215,606.72 : x
  2. Step 2: Convert to fraction form
    385,356.48/531,782.56 = 215,606.72/x
  3. Step 3: Cross multiply
    385,356.48x = 531,782.56 × 215,606.72
  4. Step 4: Simplify right side
    385,356.48x = 114,655,893,514.80
  5. Step 5: Solve for x
    x = 114,655,893,514.80/385,356.48
  6. Step 6: Final answer
    x = 297,532.02

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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.