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Finding the Fourth Proportional to 640,061.74, 960,080.73 and 191,087.02

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Solution

The fourth proportional to 640,061.74, 960,080.73 and 191,087.02 is: 286,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,061.74 : 960,080.73 = 191,087.02 : x
  2. Step 2: Convert to fraction form
    640,061.74/960,080.73 = 191,087.02/x
  3. Step 3: Cross multiply
    640,061.74x = 960,080.73 × 191,087.02
  4. Step 4: Simplify right side
    640,061.74x = 183,458,965,655.13
  5. Step 5: Solve for x
    x = 183,458,965,655.13/640,061.74
  6. Step 6: Final answer
    x = 286,626.98

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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.