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Finding the Fourth Proportional to 335,980.20, 503,775.90 and 125,639.40

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Solution

The fourth proportional to 335,980.20, 503,775.90 and 125,639.40 is: 188,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,980.20 : 503,775.90 = 125,639.40 : x
  2. Step 2: Convert to fraction form
    335,980.20/503,775.90 = 125,639.40/x
  3. Step 3: Cross multiply
    335,980.20x = 503,775.90 × 125,639.40
  4. Step 4: Simplify right side
    335,980.20x = 63,294,101,810.46
  5. Step 5: Solve for x
    x = 63,294,101,810.46/335,980.20
  6. Step 6: Final answer
    x = 188,386.40

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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.