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Finding the Fourth Proportional to 335,063.80, 502,595.70 and 85,745.80

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Solution

The fourth proportional to 335,063.80, 502,595.70 and 85,745.80 is: 128,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,063.80 : 502,595.70 = 85,745.80 : x
  2. Step 2: Convert to fraction form
    335,063.80/502,595.70 = 85,745.80/x
  3. Step 3: Cross multiply
    335,063.80x = 502,595.70 × 85,745.80
  4. Step 4: Simplify right side
    335,063.80x = 43,095,470,373.06
  5. Step 5: Solve for x
    x = 43,095,470,373.06/335,063.80
  6. Step 6: Final answer
    x = 128,618.70

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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.