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Finding the Fourth Proportional to 340,304.48, 510,456.72 and 90,980

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Solution

The fourth proportional to 340,304.48, 510,456.72 and 90,980 is: 136,470

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,304.48 : 510,456.72 = 90,980 : x
  2. Step 2: Convert to fraction form
    340,304.48/510,456.72 = 90,980/x
  3. Step 3: Cross multiply
    340,304.48x = 510,456.72 × 90,980
  4. Step 4: Simplify right side
    340,304.48x = 46,441,352,385.60
  5. Step 5: Solve for x
    x = 46,441,352,385.60/340,304.48
  6. Step 6: Final answer
    x = 136,470

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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.