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Finding the Fourth Proportional to 514,666.88, 771,975.60 and 140,690.72

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Solution

The fourth proportional to 514,666.88, 771,975.60 and 140,690.72 is: 211,029.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,666.88 : 771,975.60 = 140,690.72 : x
  2. Step 2: Convert to fraction form
    514,666.88/771,975.60 = 140,690.72/x
  3. Step 3: Cross multiply
    514,666.88x = 771,975.60 × 140,690.72
  4. Step 4: Simplify right side
    514,666.88x = 108,609,802,986.43
  5. Step 5: Solve for x
    x = 108,609,802,986.43/514,666.88
  6. Step 6: Final answer
    x = 211,029.32

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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.