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Finding the Fourth Proportional to 334,641.76, 501,962.64 and 85,323.76

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Solution

The fourth proportional to 334,641.76, 501,962.64 and 85,323.76 is: 127,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,641.76 : 501,962.64 = 85,323.76 : x
  2. Step 2: Convert to fraction form
    334,641.76/501,962.64 = 85,323.76/x
  3. Step 3: Cross multiply
    334,641.76x = 501,962.64 × 85,323.76
  4. Step 4: Simplify right side
    334,641.76x = 42,829,339,824.33
  5. Step 5: Solve for x
    x = 42,829,339,824.33/334,641.76
  6. Step 6: Final answer
    x = 127,985.64

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Double scale
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Similar ratio
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1.5x scale

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.