Home / 400,365.86-552,488.40-239,309.72

Finding the Fourth Proportional to 400,365.86, 552,488.40 and 239,309.72

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Solution

The fourth proportional to 400,365.86, 552,488.40 and 239,309.72 is: 330,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,365.86 : 552,488.40 = 239,309.72 : x
  2. Step 2: Convert to fraction form
    400,365.86/552,488.40 = 239,309.72/x
  3. Step 3: Cross multiply
    400,365.86x = 552,488.40 × 239,309.72
  4. Step 4: Simplify right side
    400,365.86x = 132,215,841,544.81
  5. Step 5: Solve for x
    x = 132,215,841,544.81/400,365.86
  6. Step 6: Final answer
    x = 330,237.55

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1.5x scale

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.