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Finding the Fourth Proportional to 605,043.20, 907,564.80 and 249,939.20

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Solution

The fourth proportional to 605,043.20, 907,564.80 and 249,939.20 is: 374,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,043.20 : 907,564.80 = 249,939.20 : x
  2. Step 2: Convert to fraction form
    605,043.20/907,564.80 = 249,939.20/x
  3. Step 3: Cross multiply
    605,043.20x = 907,564.80 × 249,939.20
  4. Step 4: Simplify right side
    605,043.20x = 226,836,020,060.16
  5. Step 5: Solve for x
    x = 226,836,020,060.16/605,043.20
  6. Step 6: Final answer
    x = 374,908.80

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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.