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Finding the Fourth Proportional to 407,881.02, 612,195.06 and 208,341.30

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Solution

The fourth proportional to 407,881.02, 612,195.06 and 208,341.30 is: 312,702.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,881.02 : 612,195.06 = 208,341.30 : x
  2. Step 2: Convert to fraction form
    407,881.02/612,195.06 = 208,341.30/x
  3. Step 3: Cross multiply
    407,881.02x = 612,195.06 × 208,341.30
  4. Step 4: Simplify right side
    407,881.02x = 127,545,514,653.98
  5. Step 5: Solve for x
    x = 127,545,514,653.98/407,881.02
  6. Step 6: Final answer
    x = 312,702.75

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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.