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Finding the Fourth Proportional to 369,119.16, 509,393.88 and 207,979.92

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Solution

The fourth proportional to 369,119.16, 509,393.88 and 207,979.92 is: 287,017.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,119.16 : 509,393.88 = 207,979.92 : x
  2. Step 2: Convert to fraction form
    369,119.16/509,393.88 = 207,979.92/x
  3. Step 3: Cross multiply
    369,119.16x = 509,393.88 × 207,979.92
  4. Step 4: Simplify right side
    369,119.16x = 105,943,698,410.89
  5. Step 5: Solve for x
    x = 105,943,698,410.89/369,119.16
  6. Step 6: Final answer
    x = 287,017.61

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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.