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Finding the Fourth Proportional to 342,003.40, 512,421.90 and 291,848.20

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Solution

The fourth proportional to 342,003.40, 512,421.90 and 291,848.20 is: 437,274.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,003.40 : 512,421.90 = 291,848.20 : x
  2. Step 2: Convert to fraction form
    342,003.40/512,421.90 = 291,848.20/x
  3. Step 3: Cross multiply
    342,003.40x = 512,421.90 × 291,848.20
  4. Step 4: Simplify right side
    342,003.40x = 149,549,409,155.58
  5. Step 5: Solve for x
    x = 149,549,409,155.58/342,003.40
  6. Step 6: Final answer
    x = 437,274.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.