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Finding the Fourth Proportional to 530,193.74, 731,674.85 and 288,476.48

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Solution

The fourth proportional to 530,193.74, 731,674.85 and 288,476.48 is: 398,101.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,193.74 : 731,674.85 = 288,476.48 : x
  2. Step 2: Convert to fraction form
    530,193.74/731,674.85 = 288,476.48/x
  3. Step 3: Cross multiply
    530,193.74x = 731,674.85 × 288,476.48
  4. Step 4: Simplify right side
    530,193.74x = 211,070,985,619.33
  5. Step 5: Solve for x
    x = 211,070,985,619.33/530,193.74
  6. Step 6: Final answer
    x = 398,101.62

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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.