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Finding the Fourth Proportional to 415,231, 623,111.42 and 148,985.62

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Solution

The fourth proportional to 415,231, 623,111.42 and 148,985.62 is: 223,573.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,231 : 623,111.42 = 148,985.62 : x
  2. Step 2: Convert to fraction form
    415,231/623,111.42 = 148,985.62/x
  3. Step 3: Cross multiply
    415,231x = 623,111.42 × 148,985.62
  4. Step 4: Simplify right side
    415,231x = 92,834,641,237.78
  5. Step 5: Solve for x
    x = 92,834,641,237.78/415,231
  6. Step 6: Final answer
    x = 223,573.48

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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.