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Finding the Fourth Proportional to 445,418.55, 614,533 and 251,807.49

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Solution

The fourth proportional to 445,418.55, 614,533 and 251,807.49 is: 347,412.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,418.55 : 614,533 = 251,807.49 : x
  2. Step 2: Convert to fraction form
    445,418.55/614,533 = 251,807.49/x
  3. Step 3: Cross multiply
    445,418.55x = 614,533 × 251,807.49
  4. Step 4: Simplify right side
    445,418.55x = 154,744,012,252.17
  5. Step 5: Solve for x
    x = 154,744,012,252.17/445,418.55
  6. Step 6: Final answer
    x = 347,412.59

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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.