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Finding the Fourth Proportional to 229,575.60, 316,705 and 153,130

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Solution

The fourth proportional to 229,575.60, 316,705 and 153,130 is: 211,246.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,575.60 : 316,705 = 153,130 : x
  2. Step 2: Convert to fraction form
    229,575.60/316,705 = 153,130/x
  3. Step 3: Cross multiply
    229,575.60x = 316,705 × 153,130
  4. Step 4: Simplify right side
    229,575.60x = 48,497,036,650
  5. Step 5: Solve for x
    x = 48,497,036,650/229,575.60
  6. Step 6: Final answer
    x = 211,246.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.