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Finding the Fourth Proportional to 259,486.12, 358,008.42 and 152,021.80

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Solution

The fourth proportional to 259,486.12, 358,008.42 and 152,021.80 is: 209,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,486.12 : 358,008.42 = 152,021.80 : x
  2. Step 2: Convert to fraction form
    259,486.12/358,008.42 = 152,021.80/x
  3. Step 3: Cross multiply
    259,486.12x = 358,008.42 × 152,021.80
  4. Step 4: Simplify right side
    259,486.12x = 54,425,084,423.56
  5. Step 5: Solve for x
    x = 54,425,084,423.56/259,486.12
  6. Step 6: Final answer
    x = 209,741.79

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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.