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Finding the Fourth Proportional to 377,323.51, 520,998.71 and 289,970.25

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Solution

The fourth proportional to 377,323.51, 520,998.71 and 289,970.25 is: 400,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,323.51 : 520,998.71 = 289,970.25 : x
  2. Step 2: Convert to fraction form
    377,323.51/520,998.71 = 289,970.25/x
  3. Step 3: Cross multiply
    377,323.51x = 520,998.71 × 289,970.25
  4. Step 4: Simplify right side
    377,323.51x = 151,074,126,188.38
  5. Step 5: Solve for x
    x = 151,074,126,188.38/377,323.51
  6. Step 6: Final answer
    x = 400,383.55

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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.