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Finding the Fourth Proportional to 642,187.70, 963,475.91 and 242,950.85

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Solution

The fourth proportional to 642,187.70, 963,475.91 and 242,950.85 is: 364,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,187.70 : 963,475.91 = 242,950.85 : x
  2. Step 2: Convert to fraction form
    642,187.70/963,475.91 = 242,950.85/x
  3. Step 3: Cross multiply
    642,187.70x = 963,475.91 × 242,950.85
  4. Step 4: Simplify right side
    642,187.70x = 234,077,291,289.02
  5. Step 5: Solve for x
    x = 234,077,291,289.02/642,187.70
  6. Step 6: Final answer
    x = 364,499.80

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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.