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Finding the Fourth Proportional to 505,203, 697,180.14 and 278,848.50

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Solution

The fourth proportional to 505,203, 697,180.14 and 278,848.50 is: 384,810.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,203 : 697,180.14 = 278,848.50 : x
  2. Step 2: Convert to fraction form
    505,203/697,180.14 = 278,848.50/x
  3. Step 3: Cross multiply
    505,203x = 697,180.14 × 278,848.50
  4. Step 4: Simplify right side
    505,203x = 194,407,636,268.79
  5. Step 5: Solve for x
    x = 194,407,636,268.79/505,203
  6. Step 6: Final answer
    x = 384,810.93

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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.