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Finding the Fourth Proportional to 253,888.40, 380,755.84 and 76,348.32

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Solution

The fourth proportional to 253,888.40, 380,755.84 and 76,348.32 is: 114,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,888.40 : 380,755.84 = 76,348.32 : x
  2. Step 2: Convert to fraction form
    253,888.40/380,755.84 = 76,348.32/x
  3. Step 3: Cross multiply
    253,888.40x = 380,755.84 × 76,348.32
  4. Step 4: Simplify right side
    253,888.40x = 29,070,068,714.19
  5. Step 5: Solve for x
    x = 29,070,068,714.19/253,888.40
  6. Step 6: Final answer
    x = 114,499.40

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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.