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Finding the Fourth Proportional to 287,155.51, 430,794.84 and 87,492.01

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Solution

The fourth proportional to 287,155.51, 430,794.84 and 87,492.01 is: 131,256.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,155.51 : 430,794.84 = 87,492.01 : x
  2. Step 2: Convert to fraction form
    287,155.51/430,794.84 = 87,492.01/x
  3. Step 3: Cross multiply
    287,155.51x = 430,794.84 × 87,492.01
  4. Step 4: Simplify right side
    287,155.51x = 37,691,106,449.23
  5. Step 5: Solve for x
    x = 37,691,106,449.23/287,155.51
  6. Step 6: Final answer
    x = 131,256.78

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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.