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Finding the Fourth Proportional to 20,159,145.45, 30,238,718.18 and 20,159,145.45

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Solution

The fourth proportional to 20,159,145.45, 30,238,718.18 and 20,159,145.45 is: 30,238,718.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159,145.45 : 30,238,718.18 = 20,159,145.45 : x
  2. Step 2: Convert to fraction form
    20,159,145.45/30,238,718.18 = 20,159,145.45/x
  3. Step 3: Cross multiply
    20,159,145.45x = 30,238,718.18 × 20,159,145.45
  4. Step 4: Simplify right side
    20,159,145.45x = 609,586,717,911,383.50
  5. Step 5: Solve for x
    x = 609,586,717,911,383.50/20,159,145.45
  6. Step 6: Final answer
    x = 30,238,718.18

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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.