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Finding the Fourth Proportional to 527,325.36, 790,330.12 and 257,230.86

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Solution

The fourth proportional to 527,325.36, 790,330.12 and 257,230.86 is: 385,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,325.36 : 790,330.12 = 257,230.86 : x
  2. Step 2: Convert to fraction form
    527,325.36/790,330.12 = 257,230.86/x
  3. Step 3: Cross multiply
    527,325.36x = 790,330.12 × 257,230.86
  4. Step 4: Simplify right side
    527,325.36x = 203,297,296,451.50
  5. Step 5: Solve for x
    x = 203,297,296,451.50/527,325.36
  6. Step 6: Final answer
    x = 385,525.35

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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.