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Finding the Fourth Proportional to 655,897.40, 984,018.90 and 235,129.40

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Solution

The fourth proportional to 655,897.40, 984,018.90 and 235,129.40 is: 352,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,897.40 : 984,018.90 = 235,129.40 : x
  2. Step 2: Convert to fraction form
    655,897.40/984,018.90 = 235,129.40/x
  3. Step 3: Cross multiply
    655,897.40x = 984,018.90 × 235,129.40
  4. Step 4: Simplify right side
    655,897.40x = 231,371,773,545.66
  5. Step 5: Solve for x
    x = 231,371,773,545.66/655,897.40
  6. Step 6: Final answer
    x = 352,756.05

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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.