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Finding the Fourth Proportional to 343,765.32, 515,661.93 and 163,758.18

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Solution

The fourth proportional to 343,765.32, 515,661.93 and 163,758.18 is: 245,643.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,765.32 : 515,661.93 = 163,758.18 : x
  2. Step 2: Convert to fraction form
    343,765.32/515,661.93 = 163,758.18/x
  3. Step 3: Cross multiply
    343,765.32x = 515,661.93 × 163,758.18
  4. Step 4: Simplify right side
    343,765.32x = 84,443,859,152.09
  5. Step 5: Solve for x
    x = 84,443,859,152.09/343,765.32
  6. Step 6: Final answer
    x = 245,643.92

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1.5x scale

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.