Home / 298,943,819.40-448,415,729.10-257,331,989.10

Finding the Fourth Proportional to 298,943,819.40, 448,415,729.10 and 257,331,989.10

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Solution

The fourth proportional to 298,943,819.40, 448,415,729.10 and 257,331,989.10 is: 385,997,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,943,819.40 : 448,415,729.10 = 257,331,989.10 : x
  2. Step 2: Convert to fraction form
    298,943,819.40/448,415,729.10 = 257,331,989.10/x
  3. Step 3: Cross multiply
    298,943,819.40x = 448,415,729.10 × 257,331,989.10
  4. Step 4: Simplify right side
    298,943,819.40x = 115,391,711,513,029,760
  5. Step 5: Solve for x
    x = 115,391,711,513,029,760/298,943,819.40
  6. Step 6: Final answer
    x = 385,997,983.65

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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.