Home / 390,050,263.38-538,269,233.94-213,834,478.44

Finding the Fourth Proportional to 390,050,263.38, 538,269,233.94 and 213,834,478.44

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Solution

The fourth proportional to 390,050,263.38, 538,269,233.94 and 213,834,478.44 is: 295,091,509.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,050,263.38 : 538,269,233.94 = 213,834,478.44 : x
  2. Step 2: Convert to fraction form
    390,050,263.38/538,269,233.94 = 213,834,478.44/x
  3. Step 3: Cross multiply
    390,050,263.38x = 538,269,233.94 × 213,834,478.44
  4. Step 4: Simplify right side
    390,050,263.38x = 115,100,520,899,858,256
  5. Step 5: Solve for x
    x = 115,100,520,899,858,256/390,050,263.38
  6. Step 6: Final answer
    x = 295,091,509.24

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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.