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Finding the Fourth Proportional to 309,627.45, 432,953.55 and 309,627.45

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Solution

The fourth proportional to 309,627.45, 432,953.55 and 309,627.45 is: 432,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,627.45 : 432,953.55 = 309,627.45 : x
  2. Step 2: Convert to fraction form
    309,627.45/432,953.55 = 309,627.45/x
  3. Step 3: Cross multiply
    309,627.45x = 432,953.55 × 309,627.45
  4. Step 4: Simplify right side
    309,627.45x = 134,054,303,654.95
  5. Step 5: Solve for x
    x = 134,054,303,654.95/309,627.45
  6. Step 6: Final answer
    x = 432,953.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.