Home / 429,148.91-643,723.65-148,666.16

Finding the Fourth Proportional to 429,148.91, 643,723.65 and 148,666.16

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Solution

The fourth proportional to 429,148.91, 643,723.65 and 148,666.16 is: 222,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,148.91 : 643,723.65 = 148,666.16 : x
  2. Step 2: Convert to fraction form
    429,148.91/643,723.65 = 148,666.16/x
  3. Step 3: Cross multiply
    429,148.91x = 643,723.65 × 148,666.16
  4. Step 4: Simplify right side
    429,148.91x = 95,699,919,928.07
  5. Step 5: Solve for x
    x = 95,699,919,928.07/429,148.91
  6. Step 6: Final answer
    x = 222,999.33

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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.