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Finding the Fourth Proportional to 640,345.84, 961,014.40 and 241,349.52

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Solution

The fourth proportional to 640,345.84, 961,014.40 and 241,349.52 is: 362,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,345.84 : 961,014.40 = 241,349.52 : x
  2. Step 2: Convert to fraction form
    640,345.84/961,014.40 = 241,349.52/x
  3. Step 3: Cross multiply
    640,345.84x = 961,014.40 × 241,349.52
  4. Step 4: Simplify right side
    640,345.84x = 231,940,364,153.09
  5. Step 5: Solve for x
    x = 231,940,364,153.09/640,345.84
  6. Step 6: Final answer
    x = 362,211.09

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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.