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Finding the Fourth Proportional to 295,281.80, 442,836.30 and 105,720.20

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Solution

The fourth proportional to 295,281.80, 442,836.30 and 105,720.20 is: 158,549.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,281.80 : 442,836.30 = 105,720.20 : x
  2. Step 2: Convert to fraction form
    295,281.80/442,836.30 = 105,720.20/x
  3. Step 3: Cross multiply
    295,281.80x = 442,836.30 × 105,720.20
  4. Step 4: Simplify right side
    295,281.80x = 46,816,742,203.26
  5. Step 5: Solve for x
    x = 46,816,742,203.26/295,281.80
  6. Step 6: Final answer
    x = 158,549.37

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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.