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Finding the Fourth Proportional to 216,706.68, 299,087.14 and 131,807.32

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Solution

The fourth proportional to 216,706.68, 299,087.14 and 131,807.32 is: 181,913.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,706.68 : 299,087.14 = 131,807.32 : x
  2. Step 2: Convert to fraction form
    216,706.68/299,087.14 = 131,807.32/x
  3. Step 3: Cross multiply
    216,706.68x = 299,087.14 × 131,807.32
  4. Step 4: Simplify right side
    216,706.68x = 39,421,874,369.86
  5. Step 5: Solve for x
    x = 39,421,874,369.86/216,706.68
  6. Step 6: Final answer
    x = 181,913.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.