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Finding the Fourth Proportional to 194,628.80, 292,058.40 and 128,260.80

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Solution

The fourth proportional to 194,628.80, 292,058.40 and 128,260.80 is: 192,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,628.80 : 292,058.40 = 128,260.80 : x
  2. Step 2: Convert to fraction form
    194,628.80/292,058.40 = 128,260.80/x
  3. Step 3: Cross multiply
    194,628.80x = 292,058.40 × 128,260.80
  4. Step 4: Simplify right side
    194,628.80x = 37,459,644,030.72
  5. Step 5: Solve for x
    x = 37,459,644,030.72/194,628.80
  6. Step 6: Final answer
    x = 192,467.12

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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.