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Finding the Fourth Proportional to 341,488.74, 512,288.67 and 128,273.25

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Solution

The fourth proportional to 341,488.74, 512,288.67 and 128,273.25 is: 192,430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,488.74 : 512,288.67 = 128,273.25 : x
  2. Step 2: Convert to fraction form
    341,488.74/512,288.67 = 128,273.25/x
  3. Step 3: Cross multiply
    341,488.74x = 512,288.67 × 128,273.25
  4. Step 4: Simplify right side
    341,488.74x = 65,712,932,639.08
  5. Step 5: Solve for x
    x = 65,712,932,639.08/341,488.74
  6. Step 6: Final answer
    x = 192,430.74

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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.