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Finding the Fourth Proportional to 620,373.60, 930,341.70 and 221,027.40

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Solution

The fourth proportional to 620,373.60, 930,341.70 and 221,027.40 is: 331,463.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,373.60 : 930,341.70 = 221,027.40 : x
  2. Step 2: Convert to fraction form
    620,373.60/930,341.70 = 221,027.40/x
  3. Step 3: Cross multiply
    620,373.60x = 930,341.70 × 221,027.40
  4. Step 4: Simplify right side
    620,373.60x = 205,631,007,062.58
  5. Step 5: Solve for x
    x = 205,631,007,062.58/620,373.60
  6. Step 6: Final answer
    x = 331,463.18

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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.