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Finding the Fourth Proportional to 290,131.12, 435,320.52 and 163,866.16

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Solution

The fourth proportional to 290,131.12, 435,320.52 and 163,866.16 is: 245,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,131.12 : 435,320.52 = 163,866.16 : x
  2. Step 2: Convert to fraction form
    290,131.12/435,320.52 = 163,866.16/x
  3. Step 3: Cross multiply
    290,131.12x = 435,320.52 × 163,866.16
  4. Step 4: Simplify right side
    290,131.12x = 71,334,301,981.60
  5. Step 5: Solve for x
    x = 71,334,301,981.60/290,131.12
  6. Step 6: Final answer
    x = 245,869.18

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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.