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Finding the Fourth Proportional to 450,145.96, 621,177.06 and 248,929

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Solution

The fourth proportional to 450,145.96, 621,177.06 and 248,929 is: 343,508.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,145.96 : 621,177.06 = 248,929 : x
  2. Step 2: Convert to fraction form
    450,145.96/621,177.06 = 248,929/x
  3. Step 3: Cross multiply
    450,145.96x = 621,177.06 × 248,929
  4. Step 4: Simplify right side
    450,145.96x = 154,628,984,368.74
  5. Step 5: Solve for x
    x = 154,628,984,368.74/450,145.96
  6. Step 6: Final answer
    x = 343,508.55

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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.