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Finding the Fourth Proportional to 229,805.60, 344,740.80 and 72,017.60

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Solution

The fourth proportional to 229,805.60, 344,740.80 and 72,017.60 is: 108,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,805.60 : 344,740.80 = 72,017.60 : x
  2. Step 2: Convert to fraction form
    229,805.60/344,740.80 = 72,017.60/x
  3. Step 3: Cross multiply
    229,805.60x = 344,740.80 × 72,017.60
  4. Step 4: Simplify right side
    229,805.60x = 24,827,405,038.08
  5. Step 5: Solve for x
    x = 24,827,405,038.08/229,805.60
  6. Step 6: Final answer
    x = 108,036.55

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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.