Home / 305,792.30-458,688.45-128,426.60

Finding the Fourth Proportional to 305,792.30, 458,688.45 and 128,426.60

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Solution

The fourth proportional to 305,792.30, 458,688.45 and 128,426.60 is: 192,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,792.30 : 458,688.45 = 128,426.60 : x
  2. Step 2: Convert to fraction form
    305,792.30/458,688.45 = 128,426.60/x
  3. Step 3: Cross multiply
    305,792.30x = 458,688.45 × 128,426.60
  4. Step 4: Simplify right side
    305,792.30x = 58,907,798,092.77
  5. Step 5: Solve for x
    x = 58,907,798,092.77/305,792.30
  6. Step 6: Final answer
    x = 192,639.90

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Similar ratio
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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.