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Finding the Fourth Proportional to 443,146.70, 664,580.61 and 143,557.77

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Solution

The fourth proportional to 443,146.70, 664,580.61 and 143,557.77 is: 215,291.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,146.70 : 664,580.61 = 143,557.77 : x
  2. Step 2: Convert to fraction form
    443,146.70/664,580.61 = 143,557.77/x
  3. Step 3: Cross multiply
    443,146.70x = 664,580.61 × 143,557.77
  4. Step 4: Simplify right side
    443,146.70x = 95,405,710,356.84
  5. Step 5: Solve for x
    x = 95,405,710,356.84/443,146.70
  6. Step 6: Final answer
    x = 215,291.49

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1.5x scale

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.