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Finding the Fourth Proportional to 298,971,900.90, 448,457,851.35 and 117,219,078.90

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Solution

The fourth proportional to 298,971,900.90, 448,457,851.35 and 117,219,078.90 is: 175,828,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,971,900.90 : 448,457,851.35 = 117,219,078.90 : x
  2. Step 2: Convert to fraction form
    298,971,900.90/448,457,851.35 = 117,219,078.90/x
  3. Step 3: Cross multiply
    298,971,900.90x = 448,457,851.35 × 117,219,078.90
  4. Step 4: Simplify right side
    298,971,900.90x = 52,567,816,260,720,128
  5. Step 5: Solve for x
    x = 52,567,816,260,720,128/298,971,900.90
  6. Step 6: Final answer
    x = 175,828,618.35

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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.