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Finding the Fourth Proportional to 401,347.40, 553,853.07 and 220,060.89

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Solution

The fourth proportional to 401,347.40, 553,853.07 and 220,060.89 is: 303,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,347.40 : 553,853.07 = 220,060.89 : x
  2. Step 2: Convert to fraction form
    401,347.40/553,853.07 = 220,060.89/x
  3. Step 3: Cross multiply
    401,347.40x = 553,853.07 × 220,060.89
  4. Step 4: Simplify right side
    401,347.40x = 121,881,399,513.43
  5. Step 5: Solve for x
    x = 121,881,399,513.43/401,347.40
  6. Step 6: Final answer
    x = 303,680.55

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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.