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Finding the Fourth Proportional to 558,186.98, 770,274.77 and 316,485.90

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Solution

The fourth proportional to 558,186.98, 770,274.77 and 316,485.90 is: 436,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,186.98 : 770,274.77 = 316,485.90 : x
  2. Step 2: Convert to fraction form
    558,186.98/770,274.77 = 316,485.90/x
  3. Step 3: Cross multiply
    558,186.98x = 770,274.77 × 316,485.90
  4. Step 4: Simplify right side
    558,186.98x = 243,781,102,248.31
  5. Step 5: Solve for x
    x = 243,781,102,248.31/558,186.98
  6. Step 6: Final answer
    x = 436,737.35

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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.