Home / 305,427.30-458,359.65-128,061.60

Finding the Fourth Proportional to 305,427.30, 458,359.65 and 128,061.60

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Solution

The fourth proportional to 305,427.30, 458,359.65 and 128,061.60 is: 192,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,427.30 : 458,359.65 = 128,061.60 : x
  2. Step 2: Convert to fraction form
    305,427.30/458,359.65 = 128,061.60/x
  3. Step 3: Cross multiply
    305,427.30x = 458,359.65 × 128,061.60
  4. Step 4: Simplify right side
    305,427.30x = 58,698,270,154.44
  5. Step 5: Solve for x
    x = 58,698,270,154.44/305,427.30
  6. Step 6: Final answer
    x = 192,184.10

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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.