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Finding the Fourth Proportional to 465,545.06, 698,303.76 and 128,605.98

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Solution

The fourth proportional to 465,545.06, 698,303.76 and 128,605.98 is: 192,905.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,545.06 : 698,303.76 = 128,605.98 : x
  2. Step 2: Convert to fraction form
    465,545.06/698,303.76 = 128,605.98/x
  3. Step 3: Cross multiply
    465,545.06x = 698,303.76 × 128,605.98
  4. Step 4: Simplify right side
    465,545.06x = 89,806,039,392.48
  5. Step 5: Solve for x
    x = 89,806,039,392.48/465,545.06
  6. Step 6: Final answer
    x = 192,905.15

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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.