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Finding the Fourth Proportional to 535,221.40, 738,615.72 and 293,489.60

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Solution

The fourth proportional to 535,221.40, 738,615.72 and 293,489.60 is: 405,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,221.40 : 738,615.72 = 293,489.60 : x
  2. Step 2: Convert to fraction form
    535,221.40/738,615.72 = 293,489.60/x
  3. Step 3: Cross multiply
    535,221.40x = 738,615.72 × 293,489.60
  4. Step 4: Simplify right side
    535,221.40x = 216,776,032,216.51
  5. Step 5: Solve for x
    x = 216,776,032,216.51/535,221.40
  6. Step 6: Final answer
    x = 405,021.23

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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.