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Finding the Fourth Proportional to 385,007.33, 577,103.74 and 145,017.38

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Solution

The fourth proportional to 385,007.33, 577,103.74 and 145,017.38 is: 217,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,007.33 : 577,103.74 = 145,017.38 : x
  2. Step 2: Convert to fraction form
    385,007.33/577,103.74 = 145,017.38/x
  3. Step 3: Cross multiply
    385,007.33x = 577,103.74 × 145,017.38
  4. Step 4: Simplify right side
    385,007.33x = 83,690,073,443.22
  5. Step 5: Solve for x
    x = 83,690,073,443.22/385,007.33
  6. Step 6: Final answer
    x = 217,372.67

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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.