Home / 442,931.72-664,503.41-143,412.63

Finding the Fourth Proportional to 442,931.72, 664,503.41 and 143,412.63

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Solution

The fourth proportional to 442,931.72, 664,503.41 and 143,412.63 is: 215,153.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,931.72 : 664,503.41 = 143,412.63 : x
  2. Step 2: Convert to fraction form
    442,931.72/664,503.41 = 143,412.63/x
  3. Step 3: Cross multiply
    442,931.72x = 664,503.41 × 143,412.63
  4. Step 4: Simplify right side
    442,931.72x = 95,298,181,672.07
  5. Step 5: Solve for x
    x = 95,298,181,672.07/442,931.72
  6. Step 6: Final answer
    x = 215,153.21

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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.