Home / 393,417,018.08-542,963,092.43-223,912,468.39

Finding the Fourth Proportional to 393,417,018.08, 542,963,092.43 and 223,912,468.39

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Solution

The fourth proportional to 393,417,018.08, 542,963,092.43 and 223,912,468.39 is: 309,026,302.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,417,018.08 : 542,963,092.43 = 223,912,468.39 : x
  2. Step 2: Convert to fraction form
    393,417,018.08/542,963,092.43 = 223,912,468.39/x
  3. Step 3: Cross multiply
    393,417,018.08x = 542,963,092.43 × 223,912,468.39
  4. Step 4: Simplify right side
    393,417,018.08x = 121,576,206,266,834,624
  5. Step 5: Solve for x
    x = 121,576,206,266,834,624/393,417,018.08
  6. Step 6: Final answer
    x = 309,026,302.07

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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.