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Finding the Fourth Proportional to 399,181.47, 598,780.71 and 143,030.77

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Solution

The fourth proportional to 399,181.47, 598,780.71 and 143,030.77 is: 214,549.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,181.47 : 598,780.71 = 143,030.77 : x
  2. Step 2: Convert to fraction form
    399,181.47/598,780.71 = 143,030.77/x
  3. Step 3: Cross multiply
    399,181.47x = 598,780.71 × 143,030.77
  4. Step 4: Simplify right side
    399,181.47x = 85,644,066,601.84
  5. Step 5: Solve for x
    x = 85,644,066,601.84/399,181.47
  6. Step 6: Final answer
    x = 214,549.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.