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Finding the Fourth Proportional to 431,390.06, 595,330.53 and 240,401.78

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Solution

The fourth proportional to 431,390.06, 595,330.53 and 240,401.78 is: 331,761.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,390.06 : 595,330.53 = 240,401.78 : x
  2. Step 2: Convert to fraction form
    431,390.06/595,330.53 = 240,401.78/x
  3. Step 3: Cross multiply
    431,390.06x = 595,330.53 × 240,401.78
  4. Step 4: Simplify right side
    431,390.06x = 143,118,519,100.34
  5. Step 5: Solve for x
    x = 143,118,519,100.34/431,390.06
  6. Step 6: Final answer
    x = 331,761.28

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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.