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Finding the Fourth Proportional to 555,150.78, 766,143.51 and 313,345.11

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Solution

The fourth proportional to 555,150.78, 766,143.51 and 313,345.11 is: 432,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,150.78 : 766,143.51 = 313,345.11 : x
  2. Step 2: Convert to fraction form
    555,150.78/766,143.51 = 313,345.11/x
  3. Step 3: Cross multiply
    555,150.78x = 766,143.51 × 313,345.11
  4. Step 4: Simplify right side
    555,150.78x = 240,067,322,416.74
  5. Step 5: Solve for x
    x = 240,067,322,416.74/555,150.78
  6. Step 6: Final answer
    x = 432,436.25

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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.