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Finding the Fourth Proportional to 388,350.83, 535,648.08 and 259,224.21

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Solution

The fourth proportional to 388,350.83, 535,648.08 and 259,224.21 is: 357,545.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,350.83 : 535,648.08 = 259,224.21 : x
  2. Step 2: Convert to fraction form
    388,350.83/535,648.08 = 259,224.21/x
  3. Step 3: Cross multiply
    388,350.83x = 535,648.08 × 259,224.21
  4. Step 4: Simplify right side
    388,350.83x = 138,852,950,376.02
  5. Step 5: Solve for x
    x = 138,852,950,376.02/388,350.83
  6. Step 6: Final answer
    x = 357,545.14

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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.