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Finding the Fourth Proportional to 572,771.20, 858,897.60 and 257,065.60

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Solution

The fourth proportional to 572,771.20, 858,897.60 and 257,065.60 is: 385,482.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,771.20 : 858,897.60 = 257,065.60 : x
  2. Step 2: Convert to fraction form
    572,771.20/858,897.60 = 257,065.60/x
  3. Step 3: Cross multiply
    572,771.20x = 858,897.60 × 257,065.60
  4. Step 4: Simplify right side
    572,771.20x = 220,793,026,882.56
  5. Step 5: Solve for x
    x = 220,793,026,882.56/572,771.20
  6. Step 6: Final answer
    x = 385,482.07

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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.