Home / 385,386,082.44-531,831,447.45-209,174,068.68

Finding the Fourth Proportional to 385,386,082.44, 531,831,447.45 and 209,174,068.68

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Solution

The fourth proportional to 385,386,082.44, 531,831,447.45 and 209,174,068.68 is: 288,659,484.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386,082.44 : 531,831,447.45 = 209,174,068.68 : x
  2. Step 2: Convert to fraction form
    385,386,082.44/531,831,447.45 = 209,174,068.68/x
  3. Step 3: Cross multiply
    385,386,082.44x = 531,831,447.45 × 209,174,068.68
  4. Step 4: Simplify right side
    385,386,082.44x = 111,245,347,715,090,112
  5. Step 5: Solve for x
    x = 111,245,347,715,090,112/385,386,082.44
  6. Step 6: Final answer
    x = 288,659,484.04

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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.