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Finding the Fourth Proportional to 280,783.85, 387,550.55 and 159,996.33

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Solution

The fourth proportional to 280,783.85, 387,550.55 and 159,996.33 is: 220,834.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,783.85 : 387,550.55 = 159,996.33 : x
  2. Step 2: Convert to fraction form
    280,783.85/387,550.55 = 159,996.33/x
  3. Step 3: Cross multiply
    280,783.85x = 387,550.55 × 159,996.33
  4. Step 4: Simplify right side
    280,783.85x = 62,006,666,089.47
  5. Step 5: Solve for x
    x = 62,006,666,089.47/280,783.85
  6. Step 6: Final answer
    x = 220,834.17

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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.