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Finding the Fourth Proportional to 288,512.51, 432,818.57 and 128,645.24

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Solution

The fourth proportional to 288,512.51, 432,818.57 and 128,645.24 is: 192,990.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,512.51 : 432,818.57 = 128,645.24 : x
  2. Step 2: Convert to fraction form
    288,512.51/432,818.57 = 128,645.24/x
  3. Step 3: Cross multiply
    288,512.51x = 432,818.57 × 128,645.24
  4. Step 4: Simplify right side
    288,512.51x = 55,680,046,971.63
  5. Step 5: Solve for x
    x = 55,680,046,971.63/288,512.51
  6. Step 6: Final answer
    x = 192,990.06

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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.