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Finding the Fourth Proportional to 376,830.90, 520,020.74 and 207,061.38

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Solution

The fourth proportional to 376,830.90, 520,020.74 and 207,061.38 is: 285,741.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,830.90 : 520,020.74 = 207,061.38 : x
  2. Step 2: Convert to fraction form
    376,830.90/520,020.74 = 207,061.38/x
  3. Step 3: Cross multiply
    376,830.90x = 520,020.74 × 207,061.38
  4. Step 4: Simplify right side
    376,830.90x = 107,676,212,570.68
  5. Step 5: Solve for x
    x = 107,676,212,570.68/376,830.90
  6. Step 6: Final answer
    x = 285,741.46

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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.