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Finding the Fourth Proportional to 286,563.60, 428,824.80 and 249,530.40

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Solution

The fourth proportional to 286,563.60, 428,824.80 and 249,530.40 is: 373,406.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,563.60 : 428,824.80 = 249,530.40 : x
  2. Step 2: Convert to fraction form
    286,563.60/428,824.80 = 249,530.40/x
  3. Step 3: Cross multiply
    286,563.60x = 428,824.80 × 249,530.40
  4. Step 4: Simplify right side
    286,563.60x = 107,004,823,873.92
  5. Step 5: Solve for x
    x = 107,004,823,873.92/286,563.60
  6. Step 6: Final answer
    x = 373,406.89

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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.