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Finding the Fourth Proportional to 402,035.79, 554,817.09 and 220,766.30

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Solution

The fourth proportional to 402,035.79, 554,817.09 and 220,766.30 is: 304,661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,035.79 : 554,817.09 = 220,766.30 : x
  2. Step 2: Convert to fraction form
    402,035.79/554,817.09 = 220,766.30/x
  3. Step 3: Cross multiply
    402,035.79x = 554,817.09 × 220,766.30
  4. Step 4: Simplify right side
    402,035.79x = 122,484,916,136.07
  5. Step 5: Solve for x
    x = 122,484,916,136.07/402,035.79
  6. Step 6: Final answer
    x = 304,661.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.