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Finding the Fourth Proportional to 415,908.20, 623,862.36 and 100,365.11

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Solution

The fourth proportional to 415,908.20, 623,862.36 and 100,365.11 is: 150,547.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,908.20 : 623,862.36 = 100,365.11 : x
  2. Step 2: Convert to fraction form
    415,908.20/623,862.36 = 100,365.11/x
  3. Step 3: Cross multiply
    415,908.20x = 623,862.36 × 100,365.11
  4. Step 4: Simplify right side
    415,908.20x = 62,614,010,765.12
  5. Step 5: Solve for x
    x = 62,614,010,765.12/415,908.20
  6. Step 6: Final answer
    x = 150,547.67

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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.