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Finding the Fourth Proportional to 608,807.40, 913,211.10 and 188,125.80

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Solution

The fourth proportional to 608,807.40, 913,211.10 and 188,125.80 is: 282,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,807.40 : 913,211.10 = 188,125.80 : x
  2. Step 2: Convert to fraction form
    608,807.40/913,211.10 = 188,125.80/x
  3. Step 3: Cross multiply
    608,807.40x = 913,211.10 × 188,125.80
  4. Step 4: Simplify right side
    608,807.40x = 171,798,568,756.38
  5. Step 5: Solve for x
    x = 171,798,568,756.38/608,807.40
  6. Step 6: Final answer
    x = 282,188.70

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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.