Home / 387,036.48-534,108.21-217,270.56

Finding the Fourth Proportional to 387,036.48, 534,108.21 and 217,270.56

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Solution

The fourth proportional to 387,036.48, 534,108.21 and 217,270.56 is: 299,832.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,036.48 : 534,108.21 = 217,270.56 : x
  2. Step 2: Convert to fraction form
    387,036.48/534,108.21 = 217,270.56/x
  3. Step 3: Cross multiply
    387,036.48x = 534,108.21 × 217,270.56
  4. Step 4: Simplify right side
    387,036.48x = 116,045,989,887.30
  5. Step 5: Solve for x
    x = 116,045,989,887.30/387,036.48
  6. Step 6: Final answer
    x = 299,832.18

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1.5x scale

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.