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Finding the Fourth Proportional to 527,139.40, 790,709.10 and 242,829.40

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Solution

The fourth proportional to 527,139.40, 790,709.10 and 242,829.40 is: 364,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,139.40 : 790,709.10 = 242,829.40 : x
  2. Step 2: Convert to fraction form
    527,139.40/790,709.10 = 242,829.40/x
  3. Step 3: Cross multiply
    527,139.40x = 790,709.10 × 242,829.40
  4. Step 4: Simplify right side
    527,139.40x = 192,007,416,327.54
  5. Step 5: Solve for x
    x = 192,007,416,327.54/527,139.40
  6. Step 6: Final answer
    x = 364,244.10

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Similar ratio
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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.