Home / 387,905,021.04-535,320,277.92-211,704,317.76

Finding the Fourth Proportional to 387,905,021.04, 535,320,277.92 and 211,704,317.76

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Solution

The fourth proportional to 387,905,021.04, 535,320,277.92 and 211,704,317.76 is: 292,158,152.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,905,021.04 : 535,320,277.92 = 211,704,317.76 : x
  2. Step 2: Convert to fraction form
    387,905,021.04/535,320,277.92 = 211,704,317.76/x
  3. Step 3: Cross multiply
    387,905,021.04x = 535,320,277.92 × 211,704,317.76
  4. Step 4: Simplify right side
    387,905,021.04x = 113,329,614,220,147,184
  5. Step 5: Solve for x
    x = 113,329,614,220,147,184/387,905,021.04
  6. Step 6: Final answer
    x = 292,158,152.31

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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.