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Finding the Fourth Proportional to 290,928.62, 435,459.52 and 155,654.30

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Solution

The fourth proportional to 290,928.62, 435,459.52 and 155,654.30 is: 232,982.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,928.62 : 435,459.52 = 155,654.30 : x
  2. Step 2: Convert to fraction form
    290,928.62/435,459.52 = 155,654.30/x
  3. Step 3: Cross multiply
    290,928.62x = 435,459.52 × 155,654.30
  4. Step 4: Simplify right side
    290,928.62x = 67,781,148,047.15
  5. Step 5: Solve for x
    x = 67,781,148,047.15/290,928.62
  6. Step 6: Final answer
    x = 232,982.05

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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.