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Finding the Fourth Proportional to 401,030.33, 553,421.99 and 219,740.79

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Solution

The fourth proportional to 401,030.33, 553,421.99 and 219,740.79 is: 303,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,030.33 : 553,421.99 = 219,740.79 : x
  2. Step 2: Convert to fraction form
    401,030.33/553,421.99 = 219,740.79/x
  3. Step 3: Cross multiply
    401,030.33x = 553,421.99 × 219,740.79
  4. Step 4: Simplify right side
    401,030.33x = 121,609,385,835.32
  5. Step 5: Solve for x
    x = 121,609,385,835.32/401,030.33
  6. Step 6: Final answer
    x = 303,242.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.