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Finding the Fourth Proportional to 343,393.60, 515,090.40 and 238,417.60

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Solution

The fourth proportional to 343,393.60, 515,090.40 and 238,417.60 is: 357,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,393.60 : 515,090.40 = 238,417.60 : x
  2. Step 2: Convert to fraction form
    343,393.60/515,090.40 = 238,417.60/x
  3. Step 3: Cross multiply
    343,393.60x = 515,090.40 × 238,417.60
  4. Step 4: Simplify right side
    343,393.60x = 122,806,616,951.04
  5. Step 5: Solve for x
    x = 122,806,616,951.04/343,393.60
  6. Step 6: Final answer
    x = 357,626.40

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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.