Home / 385,975.17-531,980.72-256,682.56

Finding the Fourth Proportional to 385,975.17, 531,980.72 and 256,682.56

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Solution

The fourth proportional to 385,975.17, 531,980.72 and 256,682.56 is: 353,779.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,975.17 : 531,980.72 = 256,682.56 : x
  2. Step 2: Convert to fraction form
    385,975.17/531,980.72 = 256,682.56/x
  3. Step 3: Cross multiply
    385,975.17x = 531,980.72 × 256,682.56
  4. Step 4: Simplify right side
    385,975.17x = 136,550,173,080.24
  5. Step 5: Solve for x
    x = 136,550,173,080.24/385,975.17
  6. Step 6: Final answer
    x = 353,779.68

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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.