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Finding the Fourth Proportional to 358,905.62, 495,260.98 and 208,012.34

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Solution

The fourth proportional to 358,905.62, 495,260.98 and 208,012.34 is: 287,040.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,905.62 : 495,260.98 = 208,012.34 : x
  2. Step 2: Convert to fraction form
    358,905.62/495,260.98 = 208,012.34/x
  3. Step 3: Cross multiply
    358,905.62x = 495,260.98 × 208,012.34
  4. Step 4: Simplify right side
    358,905.62x = 103,020,392,364.16
  5. Step 5: Solve for x
    x = 103,020,392,364.16/358,905.62
  6. Step 6: Final answer
    x = 287,040.35

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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.