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Finding the Fourth Proportional to 334,977.20, 502,465.80 and 85,659.20

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Solution

The fourth proportional to 334,977.20, 502,465.80 and 85,659.20 is: 128,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,977.20 : 502,465.80 = 85,659.20 : x
  2. Step 2: Convert to fraction form
    334,977.20/502,465.80 = 85,659.20/x
  3. Step 3: Cross multiply
    334,977.20x = 502,465.80 × 85,659.20
  4. Step 4: Simplify right side
    334,977.20x = 43,040,818,455.36
  5. Step 5: Solve for x
    x = 43,040,818,455.36/334,977.20
  6. Step 6: Final answer
    x = 128,488.80

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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.