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Finding the Fourth Proportional to 301,108.15, 415,461.99 and 172,005.40

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Solution

The fourth proportional to 301,108.15, 415,461.99 and 172,005.40 is: 237,329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,108.15 : 415,461.99 = 172,005.40 : x
  2. Step 2: Convert to fraction form
    301,108.15/415,461.99 = 172,005.40/x
  3. Step 3: Cross multiply
    301,108.15x = 415,461.99 × 172,005.40
  4. Step 4: Simplify right side
    301,108.15x = 71,461,705,774.75
  5. Step 5: Solve for x
    x = 71,461,705,774.75/301,108.15
  6. Step 6: Final answer
    x = 237,329.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.