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Finding the Fourth Proportional to 377,406.78, 520,821.33 and 207,637.26

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Solution

The fourth proportional to 377,406.78, 520,821.33 and 207,637.26 is: 286,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,406.78 : 520,821.33 = 207,637.26 : x
  2. Step 2: Convert to fraction form
    377,406.78/520,821.33 = 207,637.26/x
  3. Step 3: Cross multiply
    377,406.78x = 520,821.33 × 207,637.26
  4. Step 4: Simplify right side
    377,406.78x = 108,141,913,910.76
  5. Step 5: Solve for x
    x = 108,141,913,910.76/377,406.78
  6. Step 6: Final answer
    x = 286,539.40

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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.