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Finding the Fourth Proportional to 147,647.70, 221,471.55 and 146,772.90

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Solution

The fourth proportional to 147,647.70, 221,471.55 and 146,772.90 is: 220,159.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,647.70 : 221,471.55 = 146,772.90 : x
  2. Step 2: Convert to fraction form
    147,647.70/221,471.55 = 146,772.90/x
  3. Step 3: Cross multiply
    147,647.70x = 221,471.55 × 146,772.90
  4. Step 4: Simplify right side
    147,647.70x = 32,506,021,661.00
  5. Step 5: Solve for x
    x = 32,506,021,661.00/147,647.70
  6. Step 6: Final answer
    x = 220,159.35

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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.