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Finding the Fourth Proportional to 147,630.80, 221,478.60 and 47,795.60

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Solution

The fourth proportional to 147,630.80, 221,478.60 and 47,795.60 is: 71,703.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,630.80 : 221,478.60 = 47,795.60 : x
  2. Step 2: Convert to fraction form
    147,630.80/221,478.60 = 47,795.60/x
  3. Step 3: Cross multiply
    147,630.80x = 221,478.60 × 47,795.60
  4. Step 4: Simplify right side
    147,630.80x = 10,585,702,574.16
  5. Step 5: Solve for x
    x = 10,585,702,574.16/147,630.80
  6. Step 6: Final answer
    x = 71,703.89

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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.