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Finding the Fourth Proportional to 369,082.80, 509,335.96 and 207,940.32

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Solution

The fourth proportional to 369,082.80, 509,335.96 and 207,940.32 is: 286,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,082.80 : 509,335.96 = 207,940.32 : x
  2. Step 2: Convert to fraction form
    369,082.80/509,335.96 = 207,940.32/x
  3. Step 3: Cross multiply
    369,082.80x = 509,335.96 × 207,940.32
  4. Step 4: Simplify right side
    369,082.80x = 105,911,482,509.91
  5. Step 5: Solve for x
    x = 105,911,482,509.91/369,082.80
  6. Step 6: Final answer
    x = 286,958.60

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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.