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Finding the Fourth Proportional to 290,100.60, 435,150.90 and 90,437.10

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Solution

The fourth proportional to 290,100.60, 435,150.90 and 90,437.10 is: 135,655.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,100.60 : 435,150.90 = 90,437.10 : x
  2. Step 2: Convert to fraction form
    290,100.60/435,150.90 = 90,437.10/x
  3. Step 3: Cross multiply
    290,100.60x = 435,150.90 × 90,437.10
  4. Step 4: Simplify right side
    290,100.60x = 39,353,785,458.39
  5. Step 5: Solve for x
    x = 39,353,785,458.39/290,100.60
  6. Step 6: Final answer
    x = 135,655.65

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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.