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Finding the Fourth Proportional to 219,864.90, 308,510.70 and 219,864.90

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Solution

The fourth proportional to 219,864.90, 308,510.70 and 219,864.90 is: 308,510.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,864.90 : 308,510.70 = 219,864.90 : x
  2. Step 2: Convert to fraction form
    219,864.90/308,510.70 = 219,864.90/x
  3. Step 3: Cross multiply
    219,864.90x = 308,510.70 × 219,864.90
  4. Step 4: Simplify right side
    219,864.90x = 67,830,674,204.43
  5. Step 5: Solve for x
    x = 67,830,674,204.43/219,864.90
  6. Step 6: Final answer
    x = 308,510.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.