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Finding the Fourth Proportional to 286,464.32, 429,741.05 and 86,737.15

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Solution

The fourth proportional to 286,464.32, 429,741.05 and 86,737.15 is: 130,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,464.32 : 429,741.05 = 86,737.15 : x
  2. Step 2: Convert to fraction form
    286,464.32/429,741.05 = 86,737.15/x
  3. Step 3: Cross multiply
    286,464.32x = 429,741.05 × 86,737.15
  4. Step 4: Simplify right side
    286,464.32x = 37,274,512,406.97
  5. Step 5: Solve for x
    x = 37,274,512,406.97/286,464.32
  6. Step 6: Final answer
    x = 130,119.22

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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.