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Finding the Fourth Proportional to 340,010.40, 509,999.40 and 115,348.80

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Solution

The fourth proportional to 340,010.40, 509,999.40 and 115,348.80 is: 173,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,010.40 : 509,999.40 = 115,348.80 : x
  2. Step 2: Convert to fraction form
    340,010.40/509,999.40 = 115,348.80/x
  3. Step 3: Cross multiply
    340,010.40x = 509,999.40 × 115,348.80
  4. Step 4: Simplify right side
    340,010.40x = 58,827,818,790.72
  5. Step 5: Solve for x
    x = 58,827,818,790.72/340,010.40
  6. Step 6: Final answer
    x = 173,017.70

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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.