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Finding the Fourth Proportional to 573,187.15, 859,780.71 and 257,275

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Solution

The fourth proportional to 573,187.15, 859,780.71 and 257,275 is: 385,912.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,187.15 : 859,780.71 = 257,275 : x
  2. Step 2: Convert to fraction form
    573,187.15/859,780.71 = 257,275/x
  3. Step 3: Cross multiply
    573,187.15x = 859,780.71 × 257,275
  4. Step 4: Simplify right side
    573,187.15x = 221,200,082,165.25
  5. Step 5: Solve for x
    x = 221,200,082,165.25/573,187.15
  6. Step 6: Final answer
    x = 385,912.49

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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.