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Finding the Fourth Proportional to 287,035.26, 430,555.05 and 100,046.94

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Solution

The fourth proportional to 287,035.26, 430,555.05 and 100,046.94 is: 150,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,035.26 : 430,555.05 = 100,046.94 : x
  2. Step 2: Convert to fraction form
    287,035.26/430,555.05 = 100,046.94/x
  3. Step 3: Cross multiply
    287,035.26x = 430,555.05 × 100,046.94
  4. Step 4: Simplify right side
    287,035.26x = 43,075,715,254.05
  5. Step 5: Solve for x
    x = 43,075,715,254.05/287,035.26
  6. Step 6: Final answer
    x = 150,071.16

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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.