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Finding the Fourth Proportional to 571,907.78, 857,303.73 and 272,307.86

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Solution

The fourth proportional to 571,907.78, 857,303.73 and 272,307.86 is: 408,196.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,907.78 : 857,303.73 = 272,307.86 : x
  2. Step 2: Convert to fraction form
    571,907.78/857,303.73 = 272,307.86/x
  3. Step 3: Cross multiply
    571,907.78x = 857,303.73 × 272,307.86
  4. Step 4: Simplify right side
    571,907.78x = 233,450,544,086.32
  5. Step 5: Solve for x
    x = 233,450,544,086.32/571,907.78
  6. Step 6: Final answer
    x = 408,196.13

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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.