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Finding the Fourth Proportional to 195,415.40, 292,907.10 and 77,047.40

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Solution

The fourth proportional to 195,415.40, 292,907.10 and 77,047.40 is: 115,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,415.40 : 292,907.10 = 77,047.40 : x
  2. Step 2: Convert to fraction form
    195,415.40/292,907.10 = 77,047.40/x
  3. Step 3: Cross multiply
    195,415.40x = 292,907.10 × 77,047.40
  4. Step 4: Simplify right side
    195,415.40x = 22,567,730,496.54
  5. Step 5: Solve for x
    x = 22,567,730,496.54/195,415.40
  6. Step 6: Final answer
    x = 115,485.94

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1.5x scale

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.