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Finding the Fourth Proportional to 288,837.40, 432,894.60 and 139,037.56

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Solution

The fourth proportional to 288,837.40, 432,894.60 and 139,037.56 is: 208,382.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,837.40 : 432,894.60 = 139,037.56 : x
  2. Step 2: Convert to fraction form
    288,837.40/432,894.60 = 139,037.56/x
  3. Step 3: Cross multiply
    288,837.40x = 432,894.60 × 139,037.56
  4. Step 4: Simplify right side
    288,837.40x = 60,188,608,921.18
  5. Step 5: Solve for x
    x = 60,188,608,921.18/288,837.40
  6. Step 6: Final answer
    x = 208,382.32

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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.