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Finding the Fourth Proportional to 493,518.51, 681,050.30 and 278,645.76

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Solution

The fourth proportional to 493,518.51, 681,050.30 and 278,645.76 is: 384,528.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,518.51 : 681,050.30 = 278,645.76 : x
  2. Step 2: Convert to fraction form
    493,518.51/681,050.30 = 278,645.76/x
  3. Step 3: Cross multiply
    493,518.51x = 681,050.30 × 278,645.76
  4. Step 4: Simplify right side
    493,518.51x = 189,771,777,048.50
  5. Step 5: Solve for x
    x = 189,771,777,048.50/493,518.51
  6. Step 6: Final answer
    x = 384,528.19

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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.