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Finding the Fourth Proportional to 343,443.40, 515,165.10 and 306,701.80

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Solution

The fourth proportional to 343,443.40, 515,165.10 and 306,701.80 is: 460,052.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,443.40 : 515,165.10 = 306,701.80 : x
  2. Step 2: Convert to fraction form
    343,443.40/515,165.10 = 306,701.80/x
  3. Step 3: Cross multiply
    343,443.40x = 515,165.10 × 306,701.80
  4. Step 4: Simplify right side
    343,443.40x = 158,002,063,467.18
  5. Step 5: Solve for x
    x = 158,002,063,467.18/343,443.40
  6. Step 6: Final answer
    x = 460,052.70

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1.5x scale

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.