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Finding the Fourth Proportional to 305,477.80, 458,331.90 and 147,845.80

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Solution

The fourth proportional to 305,477.80, 458,331.90 and 147,845.80 is: 221,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,477.80 : 458,331.90 = 147,845.80 : x
  2. Step 2: Convert to fraction form
    305,477.80/458,331.90 = 147,845.80/x
  3. Step 3: Cross multiply
    305,477.80x = 458,331.90 × 147,845.80
  4. Step 4: Simplify right side
    305,477.80x = 67,762,446,421.02
  5. Step 5: Solve for x
    x = 67,762,446,421.02/305,477.80
  6. Step 6: Final answer
    x = 221,824.45

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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.