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Finding the Fourth Proportional to 431,389.06, 595,329.15 and 240,400.78

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Solution

The fourth proportional to 431,389.06, 595,329.15 and 240,400.78 is: 331,759.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,389.06 : 595,329.15 = 240,400.78 : x
  2. Step 2: Convert to fraction form
    431,389.06/595,329.15 = 240,400.78/x
  3. Step 3: Cross multiply
    431,389.06x = 595,329.15 × 240,400.78
  4. Step 4: Simplify right side
    431,389.06x = 143,117,592,016.74
  5. Step 5: Solve for x
    x = 143,117,592,016.74/431,389.06
  6. Step 6: Final answer
    x = 331,759.90

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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.