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Finding the Fourth Proportional to 304,987.36, 420,876.50 and 169,018.49

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Solution

The fourth proportional to 304,987.36, 420,876.50 and 169,018.49 is: 233,242.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,987.36 : 420,876.50 = 169,018.49 : x
  2. Step 2: Convert to fraction form
    304,987.36/420,876.50 = 169,018.49/x
  3. Step 3: Cross multiply
    304,987.36x = 420,876.50 × 169,018.49
  4. Step 4: Simplify right side
    304,987.36x = 71,135,908,402.10
  5. Step 5: Solve for x
    x = 71,135,908,402.10/304,987.36
  6. Step 6: Final answer
    x = 233,242.15

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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.