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Finding the Fourth Proportional to 280,192.50, 386,665.65 and 179,590.50

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Solution

The fourth proportional to 280,192.50, 386,665.65 and 179,590.50 is: 247,834.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,192.50 : 386,665.65 = 179,590.50 : x
  2. Step 2: Convert to fraction form
    280,192.50/386,665.65 = 179,590.50/x
  3. Step 3: Cross multiply
    280,192.50x = 386,665.65 × 179,590.50
  4. Step 4: Simplify right side
    280,192.50x = 69,441,477,416.33
  5. Step 5: Solve for x
    x = 69,441,477,416.33/280,192.50
  6. Step 6: Final answer
    x = 247,834.89

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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.