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Finding the Fourth Proportional to 290,382.63, 435,590.34 and 103,394.13

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Solution

The fourth proportional to 290,382.63, 435,590.34 and 103,394.13 is: 155,097.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,382.63 : 435,590.34 = 103,394.13 : x
  2. Step 2: Convert to fraction form
    290,382.63/435,590.34 = 103,394.13/x
  3. Step 3: Cross multiply
    290,382.63x = 435,590.34 × 103,394.13
  4. Step 4: Simplify right side
    290,382.63x = 45,037,484,240.70
  5. Step 5: Solve for x
    x = 45,037,484,240.70/290,382.63
  6. Step 6: Final answer
    x = 155,097.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.