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Finding the Fourth Proportional to 640,838.03, 961,311.71 and 167,522.63

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Solution

The fourth proportional to 640,838.03, 961,311.71 and 167,522.63 is: 251,298.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,838.03 : 961,311.71 = 167,522.63 : x
  2. Step 2: Convert to fraction form
    640,838.03/961,311.71 = 167,522.63/x
  3. Step 3: Cross multiply
    640,838.03x = 961,311.71 × 167,522.63
  4. Step 4: Simplify right side
    640,838.03x = 161,041,461,521.25
  5. Step 5: Solve for x
    x = 161,041,461,521.25/640,838.03
  6. Step 6: Final answer
    x = 251,298.23

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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.