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Finding the Fourth Proportional to 377,115.56, 520,421.40 and 207,360.60

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Solution

The fourth proportional to 377,115.56, 520,421.40 and 207,360.60 is: 286,158.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,115.56 : 520,421.40 = 207,360.60 : x
  2. Step 2: Convert to fraction form
    377,115.56/520,421.40 = 207,360.60/x
  3. Step 3: Cross multiply
    377,115.56x = 520,421.40 × 207,360.60
  4. Step 4: Simplify right side
    377,115.56x = 107,914,893,756.84
  5. Step 5: Solve for x
    x = 107,914,893,756.84/377,115.56
  6. Step 6: Final answer
    x = 286,158.69

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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.