Home / 385,291,651.10-531,702,478.55-209,079,646.46

Finding the Fourth Proportional to 385,291,651.10, 531,702,478.55 and 209,079,646.46

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Solution

The fourth proportional to 385,291,651.10, 531,702,478.55 and 209,079,646.46 is: 288,529,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,291,651.10 : 531,702,478.55 = 209,079,646.46 : x
  2. Step 2: Convert to fraction form
    385,291,651.10/531,702,478.55 = 209,079,646.46/x
  3. Step 3: Cross multiply
    385,291,651.10x = 531,702,478.55 × 209,079,646.46
  4. Step 4: Simplify right side
    385,291,651.10x = 111,168,166,237,401,088
  5. Step 5: Solve for x
    x = 111,168,166,237,401,088/385,291,651.10
  6. Step 6: Final answer
    x = 288,529,912.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.