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Finding the Fourth Proportional to 377,111.54, 520,415.88 and 207,356.60

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Solution

The fourth proportional to 377,111.54, 520,415.88 and 207,356.60 is: 286,153.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,111.54 : 520,415.88 = 207,356.60 : x
  2. Step 2: Convert to fraction form
    377,111.54/520,415.88 = 207,356.60/x
  3. Step 3: Cross multiply
    377,111.54x = 520,415.88 × 207,356.60
  4. Step 4: Simplify right side
    377,111.54x = 107,911,667,462.81
  5. Step 5: Solve for x
    x = 107,911,667,462.81/377,111.54
  6. Step 6: Final answer
    x = 286,153.18

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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.