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Finding the Fourth Proportional to 262,572.70, 393,340.65 and 157,078.30

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Solution

The fourth proportional to 262,572.70, 393,340.65 and 157,078.30 is: 235,307.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,572.70 : 393,340.65 = 157,078.30 : x
  2. Step 2: Convert to fraction form
    262,572.70/393,340.65 = 157,078.30/x
  3. Step 3: Cross multiply
    262,572.70x = 393,340.65 × 157,078.30
  4. Step 4: Simplify right side
    262,572.70x = 61,785,280,622.90
  5. Step 5: Solve for x
    x = 61,785,280,622.90/262,572.70
  6. Step 6: Final answer
    x = 235,307.33

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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.