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Finding the Fourth Proportional to 388,342.87, 535,637.11 and 259,216.24

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Solution

The fourth proportional to 388,342.87, 535,637.11 and 259,216.24 is: 357,534.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,342.87 : 535,637.11 = 259,216.24 : x
  2. Step 2: Convert to fraction form
    388,342.87/535,637.11 = 259,216.24/x
  3. Step 3: Cross multiply
    388,342.87x = 535,637.11 × 259,216.24
  4. Step 4: Simplify right side
    388,342.87x = 138,845,837,658.67
  5. Step 5: Solve for x
    x = 138,845,837,658.67/388,342.87
  6. Step 6: Final answer
    x = 357,534.15

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1.5x scale

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.