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Finding the Fourth Proportional to 262,212.90, 393,319.35 and 156,977.70

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Solution

The fourth proportional to 262,212.90, 393,319.35 and 156,977.70 is: 235,466.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,212.90 : 393,319.35 = 156,977.70 : x
  2. Step 2: Convert to fraction form
    262,212.90/393,319.35 = 156,977.70/x
  3. Step 3: Cross multiply
    262,212.90x = 393,319.35 × 156,977.70
  4. Step 4: Simplify right side
    262,212.90x = 61,742,366,928.50
  5. Step 5: Solve for x
    x = 61,742,366,928.50/262,212.90
  6. Step 6: Final answer
    x = 235,466.55

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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.