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Finding the Fourth Proportional to 298,201,802.10, 447,302,703.15 and 79,885,839.30

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Solution

The fourth proportional to 298,201,802.10, 447,302,703.15 and 79,885,839.30 is: 119,828,758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,201,802.10 : 447,302,703.15 = 79,885,839.30 : x
  2. Step 2: Convert to fraction form
    298,201,802.10/447,302,703.15 = 79,885,839.30/x
  3. Step 3: Cross multiply
    298,201,802.10x = 447,302,703.15 × 79,885,839.30
  4. Step 4: Simplify right side
    298,201,802.10x = 35,733,151,862,296,500
  5. Step 5: Solve for x
    x = 35,733,151,862,296,500/298,201,802.10
  6. Step 6: Final answer
    x = 119,828,758.95

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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.