Home / 690,142.68-1,035,218.88-240,861.60

Finding the Fourth Proportional to 690,142.68, 1,035,218.88 and 240,861.60

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Solution

The fourth proportional to 690,142.68, 1,035,218.88 and 240,861.60 is: 361,294.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,142.68 : 1,035,218.88 = 240,861.60 : x
  2. Step 2: Convert to fraction form
    690,142.68/1,035,218.88 = 240,861.60/x
  3. Step 3: Cross multiply
    690,142.68x = 1,035,218.88 × 240,861.60
  4. Step 4: Simplify right side
    690,142.68x = 249,344,475,787.01
  5. Step 5: Solve for x
    x = 249,344,475,787.01/690,142.68
  6. Step 6: Final answer
    x = 361,294.10

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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.