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Finding the Fourth Proportional to 290,078.04, 435,289.60 and 156,955.62

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Solution

The fourth proportional to 290,078.04, 435,289.60 and 156,955.62 is: 235,526.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,078.04 : 435,289.60 = 156,955.62 : x
  2. Step 2: Convert to fraction form
    290,078.04/435,289.60 = 156,955.62/x
  3. Step 3: Cross multiply
    290,078.04x = 435,289.60 × 156,955.62
  4. Step 4: Simplify right side
    290,078.04x = 68,321,149,047.55
  5. Step 5: Solve for x
    x = 68,321,149,047.55/290,078.04
  6. Step 6: Final answer
    x = 235,526.79

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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.