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Finding the Fourth Proportional to 550,240.98, 759,262.40 and 320,740.84

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Solution

The fourth proportional to 550,240.98, 759,262.40 and 320,740.84 is: 442,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,240.98 : 759,262.40 = 320,740.84 : x
  2. Step 2: Convert to fraction form
    550,240.98/759,262.40 = 320,740.84/x
  3. Step 3: Cross multiply
    550,240.98x = 759,262.40 × 320,740.84
  4. Step 4: Simplify right side
    550,240.98x = 243,526,459,956.42
  5. Step 5: Solve for x
    x = 243,526,459,956.42/550,240.98
  6. Step 6: Final answer
    x = 442,581.47

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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.