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Finding the Fourth Proportional to 553,621.80, 830,432.70 and 354,167.40

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Solution

The fourth proportional to 553,621.80, 830,432.70 and 354,167.40 is: 531,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,621.80 : 830,432.70 = 354,167.40 : x
  2. Step 2: Convert to fraction form
    553,621.80/830,432.70 = 354,167.40/x
  3. Step 3: Cross multiply
    553,621.80x = 830,432.70 × 354,167.40
  4. Step 4: Simplify right side
    553,621.80x = 294,112,190,233.98
  5. Step 5: Solve for x
    x = 294,112,190,233.98/553,621.80
  6. Step 6: Final answer
    x = 531,251.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.