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Finding the Fourth Proportional to 286,518.81, 429,187.59 and 167,830.32

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Solution

The fourth proportional to 286,518.81, 429,187.59 and 167,830.32 is: 251,399.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,518.81 : 429,187.59 = 167,830.32 : x
  2. Step 2: Convert to fraction form
    286,518.81/429,187.59 = 167,830.32/x
  3. Step 3: Cross multiply
    286,518.81x = 429,187.59 × 167,830.32
  4. Step 4: Simplify right side
    286,518.81x = 72,030,690,569.73
  5. Step 5: Solve for x
    x = 72,030,690,569.73/286,518.81
  6. Step 6: Final answer
    x = 251,399.52

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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.