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Finding the Fourth Proportional to 358,807.38, 495,657.81 and 339,911.70

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Solution

The fourth proportional to 358,807.38, 495,657.81 and 339,911.70 is: 469,555.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,807.38 : 495,657.81 = 339,911.70 : x
  2. Step 2: Convert to fraction form
    358,807.38/495,657.81 = 339,911.70/x
  3. Step 3: Cross multiply
    358,807.38x = 495,657.81 × 339,911.70
  4. Step 4: Simplify right side
    358,807.38x = 168,479,888,815.38
  5. Step 5: Solve for x
    x = 168,479,888,815.38/358,807.38
  6. Step 6: Final answer
    x = 469,555.25

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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.