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Finding the Fourth Proportional to 358,830.80, 538,015.80 and 148,552.40

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Solution

The fourth proportional to 358,830.80, 538,015.80 and 148,552.40 is: 222,733.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,830.80 : 538,015.80 = 148,552.40 : x
  2. Step 2: Convert to fraction form
    358,830.80/538,015.80 = 148,552.40/x
  3. Step 3: Cross multiply
    358,830.80x = 538,015.80 × 148,552.40
  4. Step 4: Simplify right side
    358,830.80x = 79,923,538,327.92
  5. Step 5: Solve for x
    x = 79,923,538,327.92/358,830.80
  6. Step 6: Final answer
    x = 222,733.22

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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.