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Finding the Fourth Proportional to 295,485.70, 442,985.55 and 127,135.30

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Solution

The fourth proportional to 295,485.70, 442,985.55 and 127,135.30 is: 190,598.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,485.70 : 442,985.55 = 127,135.30 : x
  2. Step 2: Convert to fraction form
    295,485.70/442,985.55 = 127,135.30/x
  3. Step 3: Cross multiply
    295,485.70x = 442,985.55 × 127,135.30
  4. Step 4: Simplify right side
    295,485.70x = 56,319,100,794.92
  5. Step 5: Solve for x
    x = 56,319,100,794.92/295,485.70
  6. Step 6: Final answer
    x = 190,598.40

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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.