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Finding the Fourth Proportional to 305,460.80, 458,306.40 and 147,828.80

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Solution

The fourth proportional to 305,460.80, 458,306.40 and 147,828.80 is: 221,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,460.80 : 458,306.40 = 147,828.80 : x
  2. Step 2: Convert to fraction form
    305,460.80/458,306.40 = 147,828.80/x
  3. Step 3: Cross multiply
    305,460.80x = 458,306.40 × 147,828.80
  4. Step 4: Simplify right side
    305,460.80x = 67,750,885,144.32
  5. Step 5: Solve for x
    x = 67,750,885,144.32/305,460.80
  6. Step 6: Final answer
    x = 221,798.95

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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.