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Finding the Fourth Proportional to 334,784.80, 502,128.60 and 98,102.80

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Solution

The fourth proportional to 334,784.80, 502,128.60 and 98,102.80 is: 147,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,784.80 : 502,128.60 = 98,102.80 : x
  2. Step 2: Convert to fraction form
    334,784.80/502,128.60 = 98,102.80/x
  3. Step 3: Cross multiply
    334,784.80x = 502,128.60 × 98,102.80
  4. Step 4: Simplify right side
    334,784.80x = 49,260,221,620.08
  5. Step 5: Solve for x
    x = 49,260,221,620.08/334,784.80
  6. Step 6: Final answer
    x = 147,139.96

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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.