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Finding the Fourth Proportional to 253,323.18, 349,570.62 and 138,580.20

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Solution

The fourth proportional to 253,323.18, 349,570.62 and 138,580.20 is: 191,232.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,323.18 : 349,570.62 = 138,580.20 : x
  2. Step 2: Convert to fraction form
    253,323.18/349,570.62 = 138,580.20/x
  3. Step 3: Cross multiply
    253,323.18x = 349,570.62 × 138,580.20
  4. Step 4: Simplify right side
    253,323.18x = 48,443,566,433.72
  5. Step 5: Solve for x
    x = 48,443,566,433.72/253,323.18
  6. Step 6: Final answer
    x = 191,232.27

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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.