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Finding the Fourth Proportional to 611,110.88, 843,342 and 339,196.22

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Solution

The fourth proportional to 611,110.88, 843,342 and 339,196.22 is: 468,095.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,110.88 : 843,342 = 339,196.22 : x
  2. Step 2: Convert to fraction form
    611,110.88/843,342 = 339,196.22/x
  3. Step 3: Cross multiply
    611,110.88x = 843,342 × 339,196.22
  4. Step 4: Simplify right side
    611,110.88x = 286,058,418,567.24
  5. Step 5: Solve for x
    x = 286,058,418,567.24/611,110.88
  6. Step 6: Final answer
    x = 468,095.77

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.