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Finding the Fourth Proportional to 260,503.48, 390,750.96 and 83,008.12

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Solution

The fourth proportional to 260,503.48, 390,750.96 and 83,008.12 is: 124,510.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,503.48 : 390,750.96 = 83,008.12 : x
  2. Step 2: Convert to fraction form
    260,503.48/390,750.96 = 83,008.12/x
  3. Step 3: Cross multiply
    260,503.48x = 390,750.96 × 83,008.12
  4. Step 4: Simplify right side
    260,503.48x = 32,435,502,577.80
  5. Step 5: Solve for x
    x = 32,435,502,577.80/260,503.48
  6. Step 6: Final answer
    x = 124,510.82

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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.