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Finding the Fourth Proportional to 388,678.92, 583,018.32 and 222,350.28

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Solution

The fourth proportional to 388,678.92, 583,018.32 and 222,350.28 is: 333,525.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,678.92 : 583,018.32 = 222,350.28 : x
  2. Step 2: Convert to fraction form
    388,678.92/583,018.32 = 222,350.28/x
  3. Step 3: Cross multiply
    388,678.92x = 583,018.32 × 222,350.28
  4. Step 4: Simplify right side
    388,678.92x = 129,634,286,697.13
  5. Step 5: Solve for x
    x = 129,634,286,697.13/388,678.92
  6. Step 6: Final answer
    x = 333,525.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.