Home / 385,386,099.16-531,831,469.80-209,174,084.86

Finding the Fourth Proportional to 385,386,099.16, 531,831,469.80 and 209,174,084.86

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Solution

The fourth proportional to 385,386,099.16, 531,831,469.80 and 209,174,084.86 is: 288,659,505.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,386,099.16 : 531,831,469.80 = 209,174,084.86 : x
  2. Step 2: Convert to fraction form
    385,386,099.16/531,831,469.80 = 209,174,084.86/x
  3. Step 3: Cross multiply
    385,386,099.16x = 531,831,469.80 × 209,174,084.86
  4. Step 4: Simplify right side
    385,386,099.16x = 111,245,360,995,163,744
  5. Step 5: Solve for x
    x = 111,245,360,995,163,744/385,386,099.16
  6. Step 6: Final answer
    x = 288,659,505.98

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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.