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Finding the Fourth Proportional to 402,897.78, 556,189.07 and 255,796.52

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Solution

The fourth proportional to 402,897.78, 556,189.07 and 255,796.52 is: 353,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,897.78 : 556,189.07 = 255,796.52 : x
  2. Step 2: Convert to fraction form
    402,897.78/556,189.07 = 255,796.52/x
  3. Step 3: Cross multiply
    402,897.78x = 556,189.07 × 255,796.52
  4. Step 4: Simplify right side
    402,897.78x = 142,271,224,508.11
  5. Step 5: Solve for x
    x = 142,271,224,508.11/402,897.78
  6. Step 6: Final answer
    x = 353,119.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.