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Finding the Fourth Proportional to 538,003.20, 804,931.20 and 351,379.20

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Solution

The fourth proportional to 538,003.20, 804,931.20 and 351,379.20 is: 525,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,003.20 : 804,931.20 = 351,379.20 : x
  2. Step 2: Convert to fraction form
    538,003.20/804,931.20 = 351,379.20/x
  3. Step 3: Cross multiply
    538,003.20x = 804,931.20 × 351,379.20
  4. Step 4: Simplify right side
    538,003.20x = 282,836,081,111.04
  5. Step 5: Solve for x
    x = 282,836,081,111.04/538,003.20
  6. Step 6: Final answer
    x = 525,714.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.