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Finding the Fourth Proportional to 313,661.72, 432,860.10 and 186,337.64

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Solution

The fourth proportional to 313,661.72, 432,860.10 and 186,337.64 is: 257,150.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,661.72 : 432,860.10 = 186,337.64 : x
  2. Step 2: Convert to fraction form
    313,661.72/432,860.10 = 186,337.64/x
  3. Step 3: Cross multiply
    313,661.72x = 432,860.10 × 186,337.64
  4. Step 4: Simplify right side
    313,661.72x = 80,658,129,484.16
  5. Step 5: Solve for x
    x = 80,658,129,484.16/313,661.72
  6. Step 6: Final answer
    x = 257,150.06

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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.