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Finding the Fourth Proportional to 377,360, 520,331.64 and 291,122.72

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Solution

The fourth proportional to 377,360, 520,331.64 and 291,122.72 is: 401,421.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,360 : 520,331.64 = 291,122.72 : x
  2. Step 2: Convert to fraction form
    377,360/520,331.64 = 291,122.72/x
  3. Step 3: Cross multiply
    377,360x = 520,331.64 × 291,122.72
  4. Step 4: Simplify right side
    377,360x = 151,480,362,338.86
  5. Step 5: Solve for x
    x = 151,480,362,338.86/377,360
  6. Step 6: Final answer
    x = 401,421.35

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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.