Home / 380,212.96-570,445.80-127,518.16

Finding the Fourth Proportional to 380,212.96, 570,445.80 and 127,518.16

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Solution

The fourth proportional to 380,212.96, 570,445.80 and 127,518.16 is: 191,319.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,212.96 : 570,445.80 = 127,518.16 : x
  2. Step 2: Convert to fraction form
    380,212.96/570,445.80 = 127,518.16/x
  3. Step 3: Cross multiply
    380,212.96x = 570,445.80 × 127,518.16
  4. Step 4: Simplify right side
    380,212.96x = 72,742,198,795.73
  5. Step 5: Solve for x
    x = 72,742,198,795.73/380,212.96
  6. Step 6: Final answer
    x = 191,319.62

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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.