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Finding the Fourth Proportional to 380,113.48, 570,009.58 and 113,911.88

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Solution

The fourth proportional to 380,113.48, 570,009.58 and 113,911.88 is: 170,819.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,113.48 : 570,009.58 = 113,911.88 : x
  2. Step 2: Convert to fraction form
    380,113.48/570,009.58 = 113,911.88/x
  3. Step 3: Cross multiply
    380,113.48x = 570,009.58 × 113,911.88
  4. Step 4: Simplify right side
    380,113.48x = 64,930,862,875.81
  5. Step 5: Solve for x
    x = 64,930,862,875.81/380,113.48
  6. Step 6: Final answer
    x = 170,819.68

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1.5x scale

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.