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Finding the Fourth Proportional to 334,643.76, 501,965.64 and 85,325.76

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Solution

The fourth proportional to 334,643.76, 501,965.64 and 85,325.76 is: 127,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,643.76 : 501,965.64 = 85,325.76 : x
  2. Step 2: Convert to fraction form
    334,643.76/501,965.64 = 85,325.76/x
  3. Step 3: Cross multiply
    334,643.76x = 501,965.64 × 85,325.76
  4. Step 4: Simplify right side
    334,643.76x = 42,830,599,726.89
  5. Step 5: Solve for x
    x = 42,830,599,726.89/334,643.76
  6. Step 6: Final answer
    x = 127,988.64

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Similar ratio
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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.