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Finding the Fourth Proportional to 172,980.60, 260,054.10 and 147,319.80

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Solution

The fourth proportional to 172,980.60, 260,054.10 and 147,319.80 is: 221,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,980.60 : 260,054.10 = 147,319.80 : x
  2. Step 2: Convert to fraction form
    172,980.60/260,054.10 = 147,319.80/x
  3. Step 3: Cross multiply
    172,980.60x = 260,054.10 × 147,319.80
  4. Step 4: Simplify right side
    172,980.60x = 38,311,118,001.18
  5. Step 5: Solve for x
    x = 38,311,118,001.18/172,980.60
  6. Step 6: Final answer
    x = 221,476.39

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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.