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Finding the Fourth Proportional to 290,460.10, 435,690.15 and 103,477.70

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Solution

The fourth proportional to 290,460.10, 435,690.15 and 103,477.70 is: 155,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,460.10 : 435,690.15 = 103,477.70 : x
  2. Step 2: Convert to fraction form
    290,460.10/435,690.15 = 103,477.70/x
  3. Step 3: Cross multiply
    290,460.10x = 435,690.15 × 103,477.70
  4. Step 4: Simplify right side
    290,460.10x = 45,084,214,634.66
  5. Step 5: Solve for x
    x = 45,084,214,634.66/290,460.10
  6. Step 6: Final answer
    x = 155,216.55

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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.