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Finding the Fourth Proportional to 530,185.96, 731,415.54 and 315,204.04

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Solution

The fourth proportional to 530,185.96, 731,415.54 and 315,204.04 is: 434,838.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,185.96 : 731,415.54 = 315,204.04 : x
  2. Step 2: Convert to fraction form
    530,185.96/731,415.54 = 315,204.04/x
  3. Step 3: Cross multiply
    530,185.96x = 731,415.54 × 315,204.04
  4. Step 4: Simplify right side
    530,185.96x = 230,545,133,126.78
  5. Step 5: Solve for x
    x = 230,545,133,126.78/530,185.96
  6. Step 6: Final answer
    x = 434,838.25

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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.