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Finding the Fourth Proportional to 343,702.39, 515,547.91 and 141,257.47

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Solution

The fourth proportional to 343,702.39, 515,547.91 and 141,257.47 is: 211,883.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,702.39 : 515,547.91 = 141,257.47 : x
  2. Step 2: Convert to fraction form
    343,702.39/515,547.91 = 141,257.47/x
  3. Step 3: Cross multiply
    343,702.39x = 515,547.91 × 141,257.47
  4. Step 4: Simplify right side
    343,702.39x = 72,824,993,430.39
  5. Step 5: Solve for x
    x = 72,824,993,430.39/343,702.39
  6. Step 6: Final answer
    x = 211,883.87

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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.