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Finding the Fourth Proportional to 640,860.66, 961,345.53 and 167,545.26

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Solution

The fourth proportional to 640,860.66, 961,345.53 and 167,545.26 is: 251,332.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,860.66 : 961,345.53 = 167,545.26 : x
  2. Step 2: Convert to fraction form
    640,860.66/961,345.53 = 167,545.26/x
  3. Step 3: Cross multiply
    640,860.66x = 961,345.53 × 167,545.26
  4. Step 4: Simplify right side
    640,860.66x = 161,068,886,773.69
  5. Step 5: Solve for x
    x = 161,068,886,773.69/640,860.66
  6. Step 6: Final answer
    x = 251,332.15

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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.