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Finding the Fourth Proportional to 260,501.99, 390,748.73 and 83,006.60

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Solution

The fourth proportional to 260,501.99, 390,748.73 and 83,006.60 is: 124,508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,501.99 : 390,748.73 = 83,006.60 : x
  2. Step 2: Convert to fraction form
    260,501.99/390,748.73 = 83,006.60/x
  3. Step 3: Cross multiply
    260,501.99x = 390,748.73 × 83,006.60
  4. Step 4: Simplify right side
    260,501.99x = 32,434,721,162.84
  5. Step 5: Solve for x
    x = 32,434,721,162.84/260,501.99
  6. Step 6: Final answer
    x = 124,508.54

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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.