Home / 305,870.06-458,902.60-128,329.40

Finding the Fourth Proportional to 305,870.06, 458,902.60 and 128,329.40

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Solution

The fourth proportional to 305,870.06, 458,902.60 and 128,329.40 is: 192,535.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,870.06 : 458,902.60 = 128,329.40 : x
  2. Step 2: Convert to fraction form
    305,870.06/458,902.60 = 128,329.40/x
  3. Step 3: Cross multiply
    305,870.06x = 458,902.60 × 128,329.40
  4. Step 4: Simplify right side
    305,870.06x = 58,890,696,142.87
  5. Step 5: Solve for x
    x = 58,890,696,142.87/305,870.06
  6. Step 6: Final answer
    x = 192,535.01

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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.