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Finding the Fourth Proportional to 530,220.84, 731,698.92 and 315,356.16

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Solution

The fourth proportional to 530,220.84, 731,698.92 and 315,356.16 is: 435,188.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,220.84 : 731,698.92 = 315,356.16 : x
  2. Step 2: Convert to fraction form
    530,220.84/731,698.92 = 315,356.16/x
  3. Step 3: Cross multiply
    530,220.84x = 731,698.92 × 315,356.16
  4. Step 4: Simplify right side
    530,220.84x = 230,745,761,687.35
  5. Step 5: Solve for x
    x = 230,745,761,687.35/530,220.84
  6. Step 6: Final answer
    x = 435,188.03

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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.