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Finding the Fourth Proportional to 288,539.80, 432,809.70 and 155,679.55

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Solution

The fourth proportional to 288,539.80, 432,809.70 and 155,679.55 is: 233,519.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,539.80 : 432,809.70 = 155,679.55 : x
  2. Step 2: Convert to fraction form
    288,539.80/432,809.70 = 155,679.55/x
  3. Step 3: Cross multiply
    288,539.80x = 432,809.70 × 155,679.55
  4. Step 4: Simplify right side
    288,539.80x = 67,379,619,331.64
  5. Step 5: Solve for x
    x = 67,379,619,331.64/288,539.80
  6. Step 6: Final answer
    x = 233,519.33

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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.