Home / 286,292.80-428,564.40-223,307.20

Finding the Fourth Proportional to 286,292.80, 428,564.40 and 223,307.20

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Solution

The fourth proportional to 286,292.80, 428,564.40 and 223,307.20 is: 334,278.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,292.80 : 428,564.40 = 223,307.20 : x
  2. Step 2: Convert to fraction form
    286,292.80/428,564.40 = 223,307.20/x
  3. Step 3: Cross multiply
    286,292.80x = 428,564.40 × 223,307.20
  4. Step 4: Simplify right side
    286,292.80x = 95,701,516,183.68
  5. Step 5: Solve for x
    x = 95,701,516,183.68/286,292.80
  6. Step 6: Final answer
    x = 334,278.46

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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.