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Finding the Fourth Proportional to 147,617.80, 221,390.70 and 42,425.80

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Solution

The fourth proportional to 147,617.80, 221,390.70 and 42,425.80 is: 63,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,617.80 : 221,390.70 = 42,425.80 : x
  2. Step 2: Convert to fraction form
    147,617.80/221,390.70 = 42,425.80/x
  3. Step 3: Cross multiply
    147,617.80x = 221,390.70 × 42,425.80
  4. Step 4: Simplify right side
    147,617.80x = 9,392,677,560.06
  5. Step 5: Solve for x
    x = 9,392,677,560.06/147,617.80
  6. Step 6: Final answer
    x = 63,628.35

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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.