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Finding the Fourth Proportional to 458,330.80, 687,496.20 and 192,020.08

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Solution

The fourth proportional to 458,330.80, 687,496.20 and 192,020.08 is: 288,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,330.80 : 687,496.20 = 192,020.08 : x
  2. Step 2: Convert to fraction form
    458,330.80/687,496.20 = 192,020.08/x
  3. Step 3: Cross multiply
    458,330.80x = 687,496.20 × 192,020.08
  4. Step 4: Simplify right side
    458,330.80x = 132,013,075,323.70
  5. Step 5: Solve for x
    x = 132,013,075,323.70/458,330.80
  6. Step 6: Final answer
    x = 288,030.12

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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.