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Finding the Fourth Proportional to 260,503.50, 390,750.98 and 83,008.10

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Solution

The fourth proportional to 260,503.50, 390,750.98 and 83,008.10 is: 124,510.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,503.50 : 390,750.98 = 83,008.10 : x
  2. Step 2: Convert to fraction form
    260,503.50/390,750.98 = 83,008.10/x
  3. Step 3: Cross multiply
    260,503.50x = 390,750.98 × 83,008.10
  4. Step 4: Simplify right side
    260,503.50x = 32,435,494,054.14
  5. Step 5: Solve for x
    x = 32,435,494,054.14/260,503.50
  6. Step 6: Final answer
    x = 124,510.78

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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.