Home / 298,951,008.40-448,426,512.60-257,339,178.10

Finding the Fourth Proportional to 298,951,008.40, 448,426,512.60 and 257,339,178.10

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Solution

The fourth proportional to 298,951,008.40, 448,426,512.60 and 257,339,178.10 is: 386,008,767.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,951,008.40 : 448,426,512.60 = 257,339,178.10 : x
  2. Step 2: Convert to fraction form
    298,951,008.40/448,426,512.60 = 257,339,178.10/x
  3. Step 3: Cross multiply
    298,951,008.40x = 448,426,512.60 × 257,339,178.10
  4. Step 4: Simplify right side
    298,951,008.40x = 115,397,710,190,733,296
  5. Step 5: Solve for x
    x = 115,397,710,190,733,296/298,951,008.40
  6. Step 6: Final answer
    x = 386,008,767.15

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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.