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Finding the Fourth Proportional to 266,117.80, 399,286.06 and 97,718.80

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Solution

The fourth proportional to 266,117.80, 399,286.06 and 97,718.80 is: 146,618.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,117.80 : 399,286.06 = 97,718.80 : x
  2. Step 2: Convert to fraction form
    266,117.80/399,286.06 = 97,718.80/x
  3. Step 3: Cross multiply
    266,117.80x = 399,286.06 × 97,718.80
  4. Step 4: Simplify right side
    266,117.80x = 39,017,754,639.93
  5. Step 5: Solve for x
    x = 39,017,754,639.93/266,117.80
  6. Step 6: Final answer
    x = 146,618.36

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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.