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Finding the Fourth Proportional to 260,501.30, 390,740.21 and 108,635.84

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Solution

The fourth proportional to 260,501.30, 390,740.21 and 108,635.84 is: 162,948.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,501.30 : 390,740.21 = 108,635.84 : x
  2. Step 2: Convert to fraction form
    260,501.30/390,740.21 = 108,635.84/x
  3. Step 3: Cross multiply
    260,501.30x = 390,740.21 × 108,635.84
  4. Step 4: Simplify right side
    260,501.30x = 42,448,391,715.40
  5. Step 5: Solve for x
    x = 42,448,391,715.40/260,501.30
  6. Step 6: Final answer
    x = 162,948.87

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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.