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Finding the Fourth Proportional to 287,035.76, 430,555.80 and 100,047.44

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Solution

The fourth proportional to 287,035.76, 430,555.80 and 100,047.44 is: 150,071.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,035.76 : 430,555.80 = 100,047.44 : x
  2. Step 2: Convert to fraction form
    287,035.76/430,555.80 = 100,047.44/x
  3. Step 3: Cross multiply
    287,035.76x = 430,555.80 × 100,047.44
  4. Step 4: Simplify right side
    287,035.76x = 43,076,005,567.15
  5. Step 5: Solve for x
    x = 43,076,005,567.15/287,035.76
  6. Step 6: Final answer
    x = 150,071.91

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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.