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Finding the Fourth Proportional to 510,129.40, 764,319.30 and 243,315.40

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Solution

The fourth proportional to 510,129.40, 764,319.30 and 243,315.40 is: 364,555.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,129.40 : 764,319.30 = 243,315.40 : x
  2. Step 2: Convert to fraction form
    510,129.40/764,319.30 = 243,315.40/x
  3. Step 3: Cross multiply
    510,129.40x = 764,319.30 × 243,315.40
  4. Step 4: Simplify right side
    510,129.40x = 185,970,656,207.22
  5. Step 5: Solve for x
    x = 185,970,656,207.22/510,129.40
  6. Step 6: Final answer
    x = 364,555.85

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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.