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Finding the Fourth Proportional to 266,239.20, 398,840.40 and 147,698.40

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Solution

The fourth proportional to 266,239.20, 398,840.40 and 147,698.40 is: 221,260.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,239.20 : 398,840.40 = 147,698.40 : x
  2. Step 2: Convert to fraction form
    266,239.20/398,840.40 = 147,698.40/x
  3. Step 3: Cross multiply
    266,239.20x = 398,840.40 × 147,698.40
  4. Step 4: Simplify right side
    266,239.20x = 58,908,088,935.36
  5. Step 5: Solve for x
    x = 58,908,088,935.36/266,239.20
  6. Step 6: Final answer
    x = 221,260.01

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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.