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Finding the Fourth Proportional to 358,817.73, 495,703.85 and 289,804.22

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Solution

The fourth proportional to 358,817.73, 495,703.85 and 289,804.22 is: 400,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,817.73 : 495,703.85 = 289,804.22 : x
  2. Step 2: Convert to fraction form
    358,817.73/495,703.85 = 289,804.22/x
  3. Step 3: Cross multiply
    358,817.73x = 495,703.85 × 289,804.22
  4. Step 4: Simplify right side
    358,817.73x = 143,657,063,672.71
  5. Step 5: Solve for x
    x = 143,657,063,672.71/358,817.73
  6. Step 6: Final answer
    x = 400,362.22

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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.