Home / 387,248,243.99-534,389,003.20-211,032,643.55

Finding the Fourth Proportional to 387,248,243.99, 534,389,003.20 and 211,032,643.55

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Solution

The fourth proportional to 387,248,243.99, 534,389,003.20 and 211,032,643.55 is: 291,217,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,248,243.99 : 534,389,003.20 = 211,032,643.55 : x
  2. Step 2: Convert to fraction form
    387,248,243.99/534,389,003.20 = 211,032,643.55/x
  3. Step 3: Cross multiply
    387,248,243.99x = 534,389,003.20 × 211,032,643.55
  4. Step 4: Simplify right side
    387,248,243.99x = 112,773,524,026,937,248
  5. Step 5: Solve for x
    x = 112,773,524,026,937,248/387,248,243.99
  6. Step 6: Final answer
    x = 291,217,651.15

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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.